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A metallic rod of length 50cm and mass 1...

A metallic rod of length 50cm and mass 10 g carrying a current of 2 A is suspended horizontally by mass of two vertical wires at its ends. The magnetic field that must be setup normal to the conductor in order that the tension in each wire is zero (g = 10 `m//s^(2)`)

A

100 T

B

1 T

C

0.1 T

D

10 T

Text Solution

Verified by Experts

The correct Answer is:
D
Tension will be zero if the Weight (W = mg) of the road is balanced by the mechanical force (F = Bil)
Bil = mg `thereforeB=(mg)/(Il)=(100xx10^(-3)xx10)/(2xx0.5)=10T`
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