As per the given question,
When no current was flowing in the wire, in that situation, the weighting machine was reading 142.0 g
Now, for the second case, when the value of the current = 2A, in that case the weight of the wire gets increase, it means the direction of the magnetic force is downwards, so
Here L is the length of the wire and B is the magnetic field of horseshoe magnet.
so,
Now the current in the wire gets 3A, then,
Hence machine will read
Comments
This is very well explained. Thank You.
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