A ‘Wheatstone Bridge’ circuit has been set up as shown. The resistor R 4 is an ideal carbon. The resistor R 4 is an ideal carbon resistance (tolerance = 0%) having bands of colours black, yellow and brown marked on it. The galvanometer, in this circuit, would show a ‘null point’ when another ideal carbon resistance X is connected across R 4 , having bands of colours
Text Solution
Verified by ExpertsThe correct answer is:
B
Black Yellow Brown
For Bridge Balance
Parallel resistance is x
Colour code are
Black Brown Brown
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