1.

AB is a wire of uniform resistance. The galvanometer G shows no current when the length AC = 20cm and CB = 80 cm. The resistance R is equal to                [MP PMT 1995; RPET 2001]

A.                    \[2\,\Omega \]
B.                    \[8\,\Omega \]
C.                    \[20\,\Omega \]
D.                    \[40\,\Omega \]
Answer» D.                    \[40\,\Omega \]


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