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Two long, parallel conductors carry curr...

Two long, parallel conductors carry currents in the same direction as shown in Fig. Conductor A carries a current of 150A and is held firmly in position. Condcutor B carries current `I_B` and is allowed to slide freely up and down (parallel to A) between a set of non-coducting guides. If the mass per unit length of conductor B is `0.001 gcm^-1` , what value of current `I_B` will result in equilibrium when the distance between the two conductors in 2.50cm?

Text Solution

Verified by Experts

`(mu_0)/(4pi)xx(2I_AI_Bl)/r=mg`
where `r=2.5cm`
`m=(0.100g//cm)l`
Solve to get `I_B=250/3A`
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