Question

Imagine you have two wire loops lying next to each other on a table. The first one is connected to a DC power supply (like a battery), producing a constant current through the wire, which in turn produces a magnetic field. The second wire loop reacts to this magnetic field according to Faraday's law. Does the second wire loop have any current flowing through it? Why/how is this situation different than with the AC power supply in the previous question?

Answer 1

As per the question mentioned that we have two loops, initially with zero current in both that means that zero magnetic feild cutting both wires.

Now we applied a DC power supply to a loop, this DC supply will create a constant value magnetic feild which will cut the second loop but value of this will be a constant (The change in magnetic feild will be occur for fraction of second, when it reach to 0 to that constant value, during this time only we get the current for fraction of second in 2nd loop)

But if we apply the AC power source to 1st loop than the magnetic feild will be changed every time with the diretion of current in loop 1, so ww will get the changing magnetic feild the 2nd loop also, cause of this changing feild we will get the AC supply in 2nd loop also.

I hope I clear your doubt on this.

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