Question

the number of turns in a solenoid are increased five times,without any increase in current. How is its magnetic intensity affected?

Answer 1

We know that magnetic field B = UNI.

B is the magnetic field and N is the number of turns of the coil of the solenoid.

I am the current.

Hence if current increases 5 folds, the magnetic intensity B also increases 5 times because the magnetic intensity and current, I.e. B and I respectively are directly proportional to each other.

Answer 2

Answer:

We know that B=UNI, where B is magnetic field and I is current.

Since B is directly proportional to current ( I ), then if B the intensity of magnetic field is increased 5 times then the magnitude of current is also increased 5 times.