Consider two identical galvanometers and two identical resistors with resistance R. If the internal resistance of the galvanometers R c

Question

Consider two identical galvanometers and two identical resistors with resistance R. If the internal resistance of the galvanometers $R_{c} < \frac{R}{2},$ which of the following statement(s) about any one of the galvanometers
is(are) true ?

TestHub · Accepted Answer

i = E 2 R + 2 R c V g 1 = i R c = E R c 2 R + R c = E R c 2 R + 2 R c i 2 = E 2 R + R c 2 V g 2 = i 2 2 × R c = 1 2 E 2 R + R c 2 × R c V g 2 = E R c 4 R + R c ....(2) Since R c < R 2 2 R c < R 2 R + 2 R c < 3 R V g 1 > V g 2 i A = E R c Here i = E ( 2 R + 2 R c ) 2 R . 2 R c = E ( R + R c ) 2 R R c i B = 2 R 2 R + 2 R c × E ( R + R c ) 2 R R c = E 2 R c i A > i B

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