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Calculate force per unit length acting o...

Calculate force per unit length acting on the wire B due to the current flowing in the wire A. (see figure below)

Text Solution

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Given: `i_(1)= 75 A, i_(2)= 20A, r=1 cm = 1 xx 10^(-2)m`
The force per unit length on the wire B due to current flowing in wire A is:

`(F)/(l)= (mu_(0))/(2pi) (i_(1)i_(2))/(r )`
`=((4pi xx 10^(-7))/(2pi)) xx (75 xx 20)/(1 xx 10^(-2))`
`=3 xx 10^(-2) Nm^(-1)`
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