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प्रश्न
The voltage applied to a given rheostat is made four times its initial value. By what factor will be resistance of the rheostat change?
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उत्तर
The resistance of the rheostat will not change at all as it does not depend on the voltage applied across it.
संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
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