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Transistor: Working

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Question

What is the use of High Resistance box in meter bridge and potentiometer?

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Solution

The use of high resistance box is to minimize the current drawn from the cell so that internal resistance and emf of a cell can be measured.

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Q. Answer the following :
(a) Why are the connections between the resistors in a meter bridge made of thick copper strips?
(b) Why is it generally preferred to obtain the balance point in the middle of the meter bridge wire?
(c) Which material is used for the meter bridge wire and why?
OR
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