1.

A potentiometer wire has resistance of 10 ohms. A resistance box with a resistance 19990 ohm is connected in series with the wire. The emf of the battery in the primary circuit is 2V. A thermo couple produces 2m V for a temperature difference 1^(@)C between its jucntion. When the hot junction is at 200^(@)C and cold junction at 0^(@)C, can the thermo emf be balanced on the potentiometer wire?

Answer»

thermo EMF is BALANCED 
thermo emf is not balanced
data is insufficient 
BALANCING is INDEPENDENT of temperature

Answer :B


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