Question

Explain whether a solenoid will attract paper clips if there is no current through its coils. Predict what will happen to the force between the solenoid and the paper clips if you increase the current in the coils or increased the number of turns of coil per un

Answer 1

magnetic field strength increases.

Step-by-step explanation:

No, the solenoid will not attract any magnetic substance if it does not carries a direct electric current.

The formula for the magnetic field strength of the solenoid is given as:

`B=\mu.n.I`

where:

`\mu=` permeability of free space

`n=` no. of coil turns in the solenoid

`I=` current in the coil

So, when the current & no. of coil turns in the coil are increased then the magnetic field strength also increases.