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The potentiometer is superior to a voltmeter for measuring a potential difference because |
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a) |
The resistance of the voltmeter |
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b) |
The potentiometer does not draw any current from the source of the potential |
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c) |
The sensitivity of potentiometer is better than that of the voltmeter |
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d) |
The voltmeter has a dial and of small size |
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The potentiometer is superior to a voltmeter for measuring a potential difference because |
|
|
a) |
The resistance of the voltmeter |
|
b) |
The potentiometer does not draw any current from the source of the potential |
|
c) |
The sensitivity of potentiometer is better than that of the voltmeter |
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d) |
The voltmeter has a dial and of small size |
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(b) Potentiometer is based on null deflection |