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Q.

Is it true that for current to flow through the circuit the switch should be closed?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
A closed switch allows the current to flow through it. Following is an example of a closed circuit containing an ammeter, a voltmeter, four cells of 1.5 V each, and a key. The current can only flow through the circuit if the key is closed. The ammeter will show the reading as zero if the key is open. Hence, the given statement is true.
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