Question

For the arrangement shown below, if we want to change the direction in which the magnetic needle gets deflected, then which of the following can be done?

• A. Changing the wire's material
• B. Changing the cell's polarity
• C. Decreasing the voltage
• D. Increasing the voltage

Answer 1

The correct option is B Changing the cell's polarity

For changing the direction in which magnetic needle gets deflected, we have to reverse the direction of current flowing in the wire. This can be achieved by simply reversing the polarity of the electric cell or battery connected.