Question

Which change will cause an increase in the electric current produced through electromagnetic induction?

Using more wire loops
Using opposite pole of magnet
Using a weaker magnet
Moving the solenoid slower

Answer 1

Using more wire loops

Answer 2

using more wire loops.

Step-by-step explanation:

When there is a change in magnetic flux linked with a coil changes, an emf is induced in the coil. This phenomenon is called electromagnetic induction.

the amount of induced emf developed is

`e = (d\phi )/(dt)`

If there are N number of turns in the coil, then induced emf is given by

`e = N(d\phi )/(dt)`

Induced current is given by

i
`i = (e )/(R)`

So, as number of turns increases, the current produced is also increases.