Questions
AB is a wire of uniform resistance. The galvanometer G shows no current when the length AC = 20 cm and CB = 80 cm. The resistance R is equal to
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Correct option is C
Using balanced condition, R80 = ACBC = 2080 ⇒ R=20 ΩSimilar Questions
In a meter bridge circuit as shown, when one more resistance of 100 Ω is connected is parallel with unknown resistance x, then ratio become 2. If l1 is balance length of the uniform wire A B, then the value of x must be:
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