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JEE PHYSICS MCQ: CURRENT ELECTRICITY
1
Medium
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Understanding
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For a given temperature difference which of the following pairs will generate maximum thermo-emf?
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Correct option: D
Antimony-bismuth
Option D (Antimony-bismuth) is correct because antimony and bismuth have the greatest heating contrasts, generating maximum thermo-emf.
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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