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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
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Application
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If one cell is connected wrongly in a series combination of four cells each of e.m.f and internal resistance of , then the equivalent internal resistance of the combination is
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Correct option: D
Option D () is correct because when one cell is wrongly connected, its emf opposes the others, but the internal resistances always add in series.
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Statement-1: If a resistor is connected to a battery the current decreases when the temperature increases.
Statement-2: For most of the resistors, resistance increases with increase in temperature. The reciprocal of resistance is Corresponding to the resistance , which is order of colour coding on carbon resistors? In a meter bridge, the gaps are closed by resistance 2 and 3 ohms. The value of shunt to be added to 3 ohm resistor to shift the balancing point by is
Statement-2: For most of the resistors, resistance increases with increase in temperature. The reciprocal of resistance is Corresponding to the resistance , which is order of colour coding on carbon resistors? In a meter bridge, the gaps are closed by resistance 2 and 3 ohms. The value of shunt to be added to 3 ohm resistor to shift the balancing point by is