Question

core.
5. The strength of an electromagnet is decreased by decreasing the number of turns.​

Answer 1

Answer:

it's false by increasing number of turns strength increases.

Answer 2

Answer:

The magnetic field inside a current carrying solenoid is given by

B=μ

0

nI

where n is the number of turns per unit length in the solenoid

I is the current through the wire

Hence decreasing current or number of loops per meter would decrease the magnetic field in solenoid.

The iron core being a magnet itself is magnetized hence it contributes flux to the solenoid's flux, hence the magnetic field strength. Hence removing iron core would also decrease magnetic field strength.

Please mark me as brainliest