Question

c) The following diagram shows four circuits A, B, C and D. Each circuit has a cell
and a torch bulb. Name the circuits in which the bulb will glow?
Give reason to your answer.
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Answer 1

Answer:

A and D

Explanation:

IN DIAGRAM A)

copper and aluminum are both metals hence conduct electricity

IN DIAGRAM B)

silk doesn't conduct electricity but copper does.

But here hf of the circuit has silk and half has copper therefore its not complete circuit there fore it doesn't conduct electricity

IN DIAGRAM C)

silk doesn't conduct electricity

IN DIAGRAM D)

in whole circuit copper is used hence current can flow easily