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A wire of length L, mass m and carrying ...

A wire of length L, mass m and carrying a current I is suspended from point O as shown, An another infinitely long wire carrying the same current I is at a distance L below the lower end of the wire. Given i=2A, L=1m and m=0.1kg (In 2=0.693)

What want to keep the suspended wire stationary by palcing a third inifinitely long wire carrying an upward current. Then this wire should be placed

A

`2.9`m

B

`1.9`m

C

`1.3`m

D

`2.4`m

Text Solution

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The correct Answer is:
c
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