A meter bridge is used to determine the resistance of an unknown wire by measuring the balance point length . If the wire is replaced by another wire of same material but with double the length and half the thickness, the balancing point is expected to be |
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a) |
b) |
c) |
d) |
A meter bridge is used to determine the resistance of an unknown wire by measuring the balance point length . If the wire is replaced by another wire of same material but with double the length and half the thickness, the balancing point is expected to be |
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a) |
b) |
c) |
d) |
(c) In a meter bridge the ratio of two resistances is Where and are balancing lengths. Resistance In material remains same Given, Therefore, the new balancing point is expected to be 8 . |