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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
1 of 1
Analyzing
+4 | -1
Assertion: Bending a wire does not effect electrical resistance.
Reason: Resistance of wire is proportional of resistivity of material.
Reason: Resistance of wire is proportional of resistivity of material.
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Correct option: A
If both Assertion and Reason are correct and reason is the correct explanation of Assertion.
Option A (If both Assertion and Reason are correct and reason is the correct explanation of Assertion) is wrong. Bending a wire does not affect its electrical resistance because resistance depends on resistivity, length, and cross-sectional area, none of which change when bending.
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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
