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Electricity and...

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  • Question 1
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    Which of the following store(s) the chemical energy in an electric cell?

  • Question 2
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    The dark grey granular powder inside a cell is a mixture of ___________ and carbon particles.

  • Question 3
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    Which of the following options depicts an incorrect relationship between an electric device and its symbol?

  • Question 4
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    In which of these circuits will the bulb glow the brightest?

  • Question 5
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    Which symbols are used to represent the switch in 'ON' and 'OFF' positions?

  • Question 6
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    The filament of a torch bulb is fixed to two thicker wires. One thick wire is connected to the ________ and the other thick wire is connected to the ___________.

  • Question 7
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    The handles of the tools like pliers used by electricians for repair work usually have plastic covers on them. What is/are the reason(s) for this?

    (a) Because plastic is a good conductor of heat
    (b) Because plastic is a good conductor of electricity
    (c) Because plastic is a bad conductor of electricity

  • Question 8
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    In a voltaic cell, _____________ energy is converted into electrical energy.

  • Question 9
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    Which of the following sets of materials represents insulators?

  • Question 10
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    Which of the following is a bad conductor of electricity?

  • Question 11
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    Which of the following is/are the correct reason(s) for using tungsten in an incandescent bulb?

  • Question 12
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    In the given circuit, which of the switches have to be closed so that only A and D bulbs glow?

  • Question 13
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    In the given circuit, which of the following switches have to be closed so that only A and E bulbs glow?

  • Question 14
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    In the given circuit, if we close all the switches, which bulb will not glow?

  • Question 15
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    In the given circuit, if we close the switches S1 and S2, then

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