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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Application
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The specific resistance of a wire is , its volume is and its resistance is , then its length will be
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Correct option: B
Option B () is correct because it is derived from the relationship between resistance, resistivity, volume, and 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 Two wires that are made up of two different materials whose specific resistance are in the ratio , length and area . The ratio of their resistances 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 Two wires that are made up of two different materials whose specific resistance are in the ratio , length and area . The ratio of their resistances is