Chapter 24, Problem 5STP

To determine

To Choose: The correct option.

Answer to Problem 5STP

Option C

Explanation of Solution

Introduction:

Solenoid is a coil of wire which is used as an electromagnet. As current flows in the coil, magnetic field is generated. Solenoid is used to convert mechanical energy into electrical energy. An iron core is usually placed to increase the strength of the magnetic field.

Magnetic field strength due to solenoid:

  $B=\mu NI$

Here, $\mu$ is the absolute permeability.

Factors which will affect the strength of a solenoid:

1. Number of wraps (N)

2. Strength of current (I)

3. Type of core.

The strength of the solenoid does not depend on the thickness of wire.

Conclusion:

Thus, option C is the correct option.