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Electric current flows in one direction. The Battery to Bulb pathway should have been blocked by an electrical insulator, and the Bulb to Battery pathway could have hosted a conductor. Since, the insulator prevents electric current from going to the bulb, thus the bulb does not light up.

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Q could be  made up of plastic or metal . P might be made up of plastic or metal..

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Both p and q are electrical insulators as they do not allow electric current to flow through the wires.this causes the bulb not to light up

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Jance
I think C is correct

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I think the same as  c

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Electric current can flow through the conductor,but  the electric current  cannot flow through the insulator

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From group 7
I think the answer is c as we do not know which material it is so we assume it can be either of them or maybe both are insulators

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P and Q are both electric insulators so they won’t light up the bulb.