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JEE PHYSICS MCQ: CURRENT ELECTRICITY
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The thermocouple among the following that can produce maximum thermo-emf for the same temperature difference between the junction is
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Correct option: C
Option C (Sb - Bi) is correct because the greater the separation of metals in the thermoelectric series, the greater the thermo-emf generated.
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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