Physics
Easy

Question

# Read the following statements and choose the correct option:Assertion: The strength of an electromagnet depends on the magnitude of current flowing through the solenoid.Reason: Electromagnet is a permanent magnet.

## Both A and R are true, and R is the correct explanation of A.Both A and R are true, but R is not the correct explanation of A.A is true but R is false.A is false but R is true. Hint:

## The correct answer is: A is true but R is false.

### The strength of an electromagnet depends on: The strength of the current passing through the coil, the greater the current, the greater the strength. This because the current increases there is more flow of electrons which in turn increases the magnetic field around it.  The number of turns in the coils, the greater the number of coils, the greater the strength. This is because more the number of coils, more uniformity is obtained in the magnetic field and hence it is more stronger. An electromagnet is called a temporary magnet because it produces a magnetic field only when the current flows in its coil So A is true but R is false. Whether the core is made up of a soft or hard magnetic material. Soft iron core magnetizes more quickly than hard magnetic materials like steel.  #### With Turito Foundation. #### Get an Expert Advice From Turito.  