Question

If the force acting on a particle is zero then the quantities which are conserved are :

• A. momentum and angular momentum.
• B. momentum and mechanical energy.
• C. momentum and charge.
• D. angular momentum and mechanical energy.

Answer 1

The correct option is C momentum and charge.

By newton's first law, momentum is conserved when net force is zero.

By Law of conservation of charge, Total charge of isolated system remains constant.