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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
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Statement-1: If a wire is stretched to increase its length times then its resistance also become time.
Statement-2: Resistance of the wire is directly proportional to its length.
Statement-2: Resistance of the wire is directly proportional to its length.
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Correct option: D
Statement-1 is false, Statement-2 is true
Option D is correct because Statement-1 is false (resistance becomes n2 times), and Statement-2 is true (resistance is directly proportional to length).
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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
