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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Understanding
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A wire has a non-uniform cross-sectional area as shown in figure. A steady current flows through it. Which one of the following statement is correct
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Correct option: C
The drift speed decreases on moving from A to B
Option C (The drift speed decreases on moving from A to B) is correct because drift velocity is inversely proportional to the cross-sectional area.
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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