1.

an experimental set up tor determination of resistance of a given resistor,it is adsetathe plug from the key when the ooservations are not being taken. Why'

Answer»

It is usually advised to switch of the circuit while not taking the reading during the verification of ohm's law because when the current is passed through the resistor , then due to the heating effect , the temperature of the setup rises and hence , ohm's law cannot be verified properly as ohm's law states a condition of constant temperature.



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