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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Understanding
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An electric heater kept in vacuum is heated continuously by passing electric current. Its temperature
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Correct option: D
Will become constant after sometime because of loss of heat due to radiation
The correct answer is D (Will become constant after sometime because of loss of heat due to radiation) because the heater will reach thermal equilibrium with its surroundings through radiation.
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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
