Question

hat happens to the magnetic field strength of an electromagnet if the current is doubled while keeping all other factors constant?


The magnetic field strength is halved.


The magnetic field strength remains unchanged.


The magnetic field strength is doubled.


The magnetic field strength becomes zero.

Answer 1

The magnetic field strength of an electromagnet is directly proportional to the current passing through it, assuming all other factors (such as the number of turns in the coil and the core material) are kept constant. Therefore, if the current is doubled, the magnetic field strength will also be doubled.

So, the correct answer is:

**The magnetic field strength is doubled.**