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A battery, an open switch and a resistor...

A battery, an open switch and a resistor are connected in series as shown in figure. Consider the following three statements concerning the circuit. A voltmeter will read zero if it is connected across points

(i) P and T (ii) P and Q (iii) Q and T Which one of the above is/are true?

A

only i

B

only iii

C

only I and iiii

D

I,ii and iii

Text Solution

Verified by Experts

The correct Answer is:
C
When the switch is not closed, a voltmeter connected across P and T will not show any potential difference. Between Q and T also there is not potential difference because circuit is not complete. Therefore in both the cases, the voltmeter will read zero. Between P and Q, the emf of the battery will be given,
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