MCQ Questions for Class 7 Science with Answers<\/a> are prepared as per the Latest Exam Pattern. Students can solve these Electric Current and Its Effects Class 7 MCQs Questions with Answers and assess their preparation level.<\/p>\nElectric Current and Its Effects Class 7 MCQs Questions with Answers<\/h2>\n
Solving the Electric Current and Its Effects Multiple Choice Questions of Class 7 Science Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Electric Current and Its Effects Class 7 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 14 Science Class 7 and cross-check your answers during preparation.<\/p>\n
Question 1.
\nBulbs, wires, cells and switches are known as the of a circuit.
\n(a) element
\n(b) switch
\n(c) filament
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) element
\nWires, cells, switches, bulbs are element of a circuit.<\/p>\n<\/details>\n
\nQuestion 2.
\nAn element measure the flowing an electric current is:
\n(a) voltmeter
\n(b) filament
\n(c) circuit
\n(d) ammeter<\/p>\n\nAnswer<\/span><\/summary>\n(d) ammeter
\nAn ammeter measure the flowing electric current.<\/p>\n<\/details>\n
\nQuestion 3.
\nAn element measure the potential difference between two points in an electric circuit is:
\n(a) voltmeter
\n(b) filament
\n(c) circuit
\n(d) ammeter<\/p>\n\nAnswer<\/span><\/summary>\n(a) voltmeter
\nVoltmeter measure the difference of two points.<\/p>\n<\/details>\n
\nQuestion 4.
\nElectric current has energy called:
\n(a) voltmeter
\n(b) filament
\n(c) electrical energy
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) electrical energy
\nElectric current has electric energy.<\/p>\n<\/details>\n
\nQuestion 5.
\nThe magnetic material around the coil is wound is called:
\n(a) magnetic substance
\n(b) core
\n(c) soft iron
\n(d) none<\/p>\n\nAnswer<\/span><\/summary>\n(b) core
\nThe magnetic material around the coil is wound is core.<\/p>\n<\/details>\n
\nQuestion 6.
\nVery strong electromagnets are used for lifting:
\n(a) fans
\n(b) washing machines
\n(c) heavy iron pieces
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) heavy iron pieces
\nVery strong electromagnet is used for lifting iron pieces.<\/p>\n<\/details>\n
\nQuestion 7.
\nA safety device that cuts off the current in a circuit if a sudden heavy current starts flowing in it is:
\n(a) fuse
\n(b) ammeter
\n(c) solenoid
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) fuse
\nFuse is a safety device that cuts off the current.<\/p>\n<\/details>\n
\nQuestion 8.
\nA cylindrical coil of current carrying wire is:
\n(a) voltmeter
\n(b) ammeter
\n(c) fuse
\n(d) solenoid<\/p>\n\nAnswer<\/span><\/summary>\n(d) solenoid
\nA solenoid is a cylindrical coil of wire.<\/p>\n<\/details>\n
\nQuestion 9.
\nA coil of insulated currrent- carrying wire wound around a piece of a magnetic substance is:
\n(a) voltmeter
\n(b) magnetic coil
\n(c) electromagnet
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) electromagnet
\nAn electromagnet is a coil of insulated wire.<\/p>\n<\/details>\n
\nQuestion 10.
\nWhich of these is not circuit element ?
\n(a) potential difference
\n(b) voltmeter
\n(c) resistor
\n(d) battery<\/p>\n\nAnswer<\/span><\/summary>\n(c) resistor
\nResistor is not a circuit element.<\/p>\n<\/details>\n
\nQuestion 11.
\nWhich of these appliances does not use on electro magnet?
\n(a) washing
\n(b) refrigerator
\n(c) room heater
\n(d) electric bell<\/p>\n\nAnswer<\/span><\/summary>\n(c) room heater
\nRoom heater does not use an electro magnet.<\/p>\n<\/details>\n
\nQuestion 12.
\nThe fuse wire:
\n(a) never breaks
\n(b) breaks on shorting of wire
\n(c) breaks on flowing of excessive current
\n(d) both (b) and (c)<\/p>\n\nAnswer<\/span><\/summary>\n(d) both (b) and (c)
\nAlways fuse breaks on shorting of wire and flowing exessive current.<\/p>\n<\/details>\n
\nQuestion 13.
\nWhich of the following liquid is bad conductor of electricity:
\n(a) salted water
\n(b) orange juice
\n(c) lemon juice
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(d) none of these
\nNone of these Liquid is bad conductor of electricity.
\nA circuit diagram represent on electrical circuit.<\/p>\n<\/details>\n
\nQuestion 14.
\nWhich of the following substance is conductor of electricity:
\n(a) rubber
\n(b) paper
\n(c) nails
\n(d) plastic<\/p>\n\nAnswer<\/span><\/summary>\n(c) nails
\nNails is conductor of electricity.<\/p>\n<\/details>\n
\nQuestion 15.
\nThe electric current which is broken at some point is called:
\n(a) open circuit
\n(b) closed circuit
\n(c) short circuit
\n(d) long circuit<\/p>\n\nAnswer<\/span><\/summary>\n(a) open circuit
\nOpen circuit is broken at some point.<\/p>\n<\/details>\n
\nQuestion 16.
\n symbol represents:
\n(a) cell
\n(b) battery
\n(c) closed circuit
\n(d) open key<\/p>\n\nAnswer<\/span><\/summary>\n(c) closed circuit
\n This symbol represents closed key.<\/p>\n<\/details>\n
\nQuestion 17.
\nA circuit diagram represent on:
\n(a) switch
\n(b) electrical circuit
\n(c) cells
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) switch
\nA circuit diagram represent on electrical circuit.<\/p>\n<\/details>\n
\nQuestion 18.
\nA control consisting of a electrical device for making or breaking or changing the connections in a circuit is:
\n(a) a switch
\n(b) a key
\n(c) both (a) and (b)
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(c) both (a) and (b)
\nBoth (a) and (b) are control consisting device of electricsl.<\/p>\n<\/details>\n
\nQuestion 19.
\n symbol represents:
\n(a) electric bulb
\n(b) electric cell
\n(c) battery
\n(d) wire<\/p>\n\nAnswer<\/span><\/summary>\n(b) electric cell
\nElectrical cell represents symbol.<\/p>\n<\/details>\n
\nQuestion 20.
\n symbol represents:
\n(a) wire
\n(b) battery
\n(c) cell
\n(d) switch in \u2018ON\u2019 position<\/p>\n\nAnswer<\/span><\/summary>\n(d) switch in \u2018ON\u2019 position
\n symbol represents switch in \u2018ON\u2019 position.<\/p>\n<\/details>\n
\nQuestion 21.
\n symbol represents:
\n(a) wire
\n(b) cell
\n(c) bulb
\n(d) battery<\/p>\n\nAnswer<\/span><\/summary>\n(a) wire
\n symbol represents wire.<\/p>\n<\/details>\n
\nQuestion 22.
\nSuch a combination of two or more cells is called :
\n(a) wire
\n(b) cell
\n(c) bulb
\n(d) battery<\/p>\n\nAnswer<\/span><\/summary>\n(d) battery
\nCombination of two or more cells is called battery.<\/p>\n<\/details>\n
\nQuestion 23.
\nThe batteries used in tractors, trucks and inverter are also made from:
\n(a) cells
\n(b) wire
\n(c) battery
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) cells
\nThe batteries used in tractors, trucks are also made from cells.<\/p>\n<\/details>\n
\nQuestion 24.
\nThe positive terminal of one cell is connected to the:
\n(a) positive terminal
\n(b) negative terminal
\n(c) wire
\n(d) bulb<\/p>\n\nAnswer<\/span><\/summary>\n(b) negative terminal
\nThe positive terminal of one cell is connected to the negative terminal.<\/p>\n<\/details>\n
\nQuestion 25.
\nThe bulb glows as soon as the switch is moved to the:
\n(a) \u2018ON\u2019 position
\n(b) \u2018OFF\u2019 position
\n(c) both (a) and (b)
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) \u2018ON\u2019 position
\nThe bulb glows as soon as the switch is \u2018ON\u2019 position.<\/p>\n<\/details>\n
\nQuestion 26.
\nThe electric current flows from the end of cell marked ‘+\u2019 called the:
\n(a) negative terminal
\n(b) positive terminal
\n(c) electric current
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(d) none of these
\nThe cell marked ‘+\u2019 is called positive terminal.<\/p>\n<\/details>\n
\nQuestion 27.
\nThrough the metal wires to the end marked \u2018 \u2014 \u2019 called the:
\n(a) bulb
\n(b) positive terminal
\n(c) battery
\n(d) negative terminal<\/p>\n\nAnswer<\/span><\/summary>\n(d) negative terminal
\nThe marked \u2018 is called the negative terminal.<\/p>\n<\/details>\n
\nQuestion 28.
\nThe bulb has a thin wire called:
\n(a) battery
\n(b) cell
\n(c) filament
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(b) cell
\nThe bulb has thin wire called filament.<\/p>\n<\/details>\n
\nQuestion 29.
\nA fan used electric current to rotate to blow:
\n(a) air
\n(b) current
\n(c) wire
\n(d) none of these<\/p>\n\nAnswer<\/span><\/summary>\n(a) air
\nA fan uses electric current to rotate to blow air.<\/p>\n<\/details>\n
\nMatch the column A with column B:<\/span><\/p>\nQuestion 1.<\/p>\n
\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Ordinary magnet<\/td>\n | (i) U-shaped iron rod<\/td>\n<\/tr>\n | \n(b) Hammer<\/td>\n | (ii) Soft iron rod<\/td>\n<\/tr>\n | \n(c) Electriomagnet<\/td>\n | (iii) Steel and armature<\/td>\n<\/tr>\n | \n(d) Armature<\/td>\n | (iv) Permanent magnetism<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Ordinary magnet<\/td>\n | (iv) Permanent magnetism<\/td>\n<\/tr>\n | \n(b) Hammer<\/td>\n | (iii) Steel and armature<\/td>\n<\/tr>\n | \n(c) Electromagnet<\/td>\n | (i) U-shaped iron rod<\/td>\n<\/tr>\n | \n(d) Armature<\/td>\n | (ii) Soft iron rod<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nQuestion 2.<\/p>\n \n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) MCB<\/td>\n | (i) Battery<\/td>\n<\/tr>\n | \n(b) Battery<\/td>\n | (ii) The bulb will not glow<\/td>\n<\/tr>\n | \n(c) Two or more cells<\/td>\n | (iii) Tractors, trucks<\/td>\n<\/tr>\n | \n(d) \u2018OFF\u2019 position<\/td>\n | (iv) Miniature Circuit Breaker<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) MCB<\/td>\n | (iv) Miniature Circuit Breaker<\/td>\n<\/tr>\n | \n(b) Battery<\/td>\n | (iii) Tractors, trucks<\/td>\n<\/tr>\n | \n(c) Two or more cells<\/td>\n | (i) Battery<\/td>\n<\/tr>\n | \n(d) \u2018OFF\u2019 position<\/td>\n | (ii) The bulb will not glow<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nQuestion 3.<\/p>\n \n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Electromagnet<\/td>\n | (i) Battery<\/td>\n<\/tr>\n | \n(b) Electric bell<\/td>\n | (ii) Attracted piece of iron<\/td>\n<\/tr>\n | \n(c) Longer Line<\/td>\n | (iii) Electromagnet<\/td>\n<\/tr>\n | \n(d) <\/td>\n | (iv) Positive terminal<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\nAnswer<\/span><\/summary>\n\n\n\nColumn-A<\/strong><\/td>\nColumn-B<\/strong><\/td>\n<\/tr>\n\n(a) Electromagnet<\/td>\n | (ii) Attracted piece of iron<\/td>\n<\/tr>\n | \n(b) Electric bell<\/td>\n | (iii) Electromagnet<\/td>\n<\/tr>\n | \n(c) Longer Line<\/td>\n | (iv) Positive terminal<\/td>\n<\/tr>\n | \n(d) <\/td>\n | (i) Battery<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/details>\n \nState the following statements are True or False:<\/span><\/p>\nQuestion 1. \nThe fuse wire never breaks.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 2. \nLonger line in the symbol for a cell represents its negative terminals.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 3. \nTo make a battery of two cells, the negative terminal of one cell is connected to the negative terminal of other cell.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 4. \nAn electromagnet attracted a table of wood.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 5. \nAn electric bell has not an electromagnet.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 6. \nWhen the electric current through the fuse exceeds a certain limit, the fuse wire melts and break.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 7. \nPlastic is not a magnetic substances.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 8. \nA key or an electric switch is a control consisting of an electrical device for changing the connections.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 9. \nThe amount of heat depends on its length, thickness, length in a wire.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 10. \nMans Christian was the first person to notice the deflection of compass needle.<\/p>\n\nAnswer<\/span><\/summary>\nTrue<\/p>\n<\/details>\n \nQuestion 11. \nThe electrical circuit which is broken at some point is called short circuit.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nQuestion 12. \nPlastic is the best conductor of electricity.<\/p>\n\nAnswer<\/span><\/summary>\nFalse<\/p>\n<\/details>\n \nFill in the blanks:<\/span><\/p>\nQuestion 1. \nThe depostion of a layer of metal on some other metal is called ……………………..<\/p>\n\nAnswer<\/span><\/summary>\nelectroplating<\/p>\n<\/details>\n \nQuestion 2. \nA combination of two or more cells is called ……………………..<\/p>\n\nAnswer<\/span><\/summary>\nbattery<\/p>\n<\/details>\n \nQuestion 3. \nThe …………………….. terminal of one cell is connected to the negative terminal of the next cell.<\/p>\n\nAnswer<\/span><\/summary>\npositive<\/p>\n<\/details>\n \nQuestion 4. \nBulb …………………….. when the circuit is complte.<\/p>\n\nAnswer<\/span><\/summary>\nglows<\/p>\n<\/details>\n \nQuestion 5. \n…………………….. is a device used to prevent any change being caused to circuit and electric appliances.<\/p>\n\nAnswer<\/span><\/summary>\n | | | | | | | | | | | | | | | | | |