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Two long and parallel straight wires A a...

Two long and parallel straight wires A and B carrying currents of 8.0 A and 5.0 A in the same direction are separated by a distance of 4.0 cm. Estimate the force on a 10 cm section of wire A.

Text Solution

Verified by Experts

Given `I_(1)=8A, I_(2)=5A and r=4 cm =0.4 m`
`F=(mu_(0))/(4pi).(2I_(1)I_(2))/(r )=(10^(-7)xx2xx8xx5)/(0.04)=2xx10^(-4) N`
The force on A of length 10 cm is `F^(1)=Fxx0.1" "(because 1m =100 cm)`
`F^(1)=2xx10^(-4)xx0.1`
`F^(1)=2xx10^(-5)` N.
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