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A conductor of linear mass dendity 0.2 g...

A conductor of linear mass dendity `0.2` g `m^(-1)` suspended by two flexible wire as shown in figure. Suppose the tension in the supporting wires is zero when it is kept inside the magnetic field of 1 T whose direction is into the page.
Compute the current inside the current and also the direction for the current . Assume `g = 10" ms"^(-2)`

Text Solution

Verified by Experts

Downward force, F = mg
Linear mass density, `m/l = 0।2 gm^(-1)`
`m/l=0।2 x 10^(-2) kg m^(-1)`
` m=(0।2 x 10^(-3) x l) kg m^(-1)`
`f=(0।2 x 10^(-3)x l x 10) N`
Upward magnetic force acting on the wire
F= BIl
`0।2 x 10^(-3)xxlxx10=1xxIxxl`
`I=2xx10^(-3)`
`I-2mA`
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