Question

SECTION-B (a)What is an open circuit? Does current flow in it?
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Answer 1

Answer:

If there's a break anywhere in the circuit, you have an open circuit, and current can not flow. In an open circuit, the two terminals are disconnected. Hence the continuity of the circuit is broken. But while current cannot flow through the circuit, there is some voltage drop between two points of a circuit.

Answer 2

An open circuit is a circuit which is broken or open. The current will not flow through it as the current will be broken.