Question -
To replace a copper strip in a circuit, which among the following should we use to complete the circuit?
Options:
A .  Wood
B .  Rubber
C .  Plastic
D .  Silver
Answer: Option D : D Silver and copper are good conductors of electricity and allow electricity to pass through them easily. So, we can use silver strip instead of copper strip in a circuit. However, plastic and wood are poor conductors of electricity and do not allow electric current to pass through them easily. Hence, they cannot be used to replace copper.
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