Question

What is the polarity of a current-carrying solenoid?

Answer 1

Step 1: Solenoid

1. A solenoid is a coil that has numerous circular turns.
2. It is made up of copper wire with proper insulation and is wound in the form of a cylindrical tube.
3. The length of the solenoid is quite large in comparison to its diameter.
4. Depending on the direction of the current, the poles will be determined.

Step 2: Apply the clock rule

1. If the current flow is in the clockwise direction, then the magnetic pole is represented as the North pole above the circular coil and the South pole below the circular coil.
2. If the current flow is in the anticlockwise direction, then the magnetic pole is represented as the South pole above the circular coil and the North pole below the circular coil.

Thus, the polarity of a solenoid carrying current can be determined by using the clock rule and it can be south or north at either end depending on the direction of current flow.