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A conducting rod of.1 meter length and 1...

A conducting rod of.1 meter length and 1kg mass is suspended by two vertical wires through its ends. An external magnetic field of 2 Tesla is applied normal to the rod. Now the current to be passed through the rod so as to make the tension in the wires zero is (take g=10`ms^2`]

A

0.5Amp

B

15 Amp

C

5Amp

D

1.5Amp

Text Solution

Verified by Experts

The correct Answer is:
C
`f_("mag")=f_"gra"," "BIl=,mg," "I=(mg)/(Bl)=(1xx10)/(2xx1)=5Amp`
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