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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Analyzing
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A potential difference is applied to a copper wire of diameter and length . There will be no effect on the electron drift speed after doubling which of the parameter
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Correct option: C
Diameter
Option C (Diameter) is correct because the electron drift speed is independent of the diameter of the wire.
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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