Question

A potentiometer wire AB is 2 m long and has total resistance of 10 0.
Galvanometer shows zero deflection at C when switch Sis closed and
at point D when switch Sis open. If Ep = 10 V and R = 9r, then CD is
equal to X cm. Find the value of
Х
2
20 V
B
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R

Answer 1

0
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