Question

Classify each of the following statements as a characteristic.
The force exerted on a charged object cannot alter the object’s speed.

• A. of electric forces only
• B. of magnetic forces only,
• C. of both electric and magnetic forces, or
• D. of neither electric nor magnetic forces.

Answer 1

The correct option is B of magnetic forces only,

Because ${\overrightarrow{F}}_B=q\overrightarrow{v}\times \overrightarrow{B}$ is perpendicular to be particale's velocity.