Question

Classify each of the following statements as a characteristic (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. (viii) The magnitude of the force depends on the charged object's direction of motion.

Answer 1

(b) Magnetic forces only

When an object is placed in an electric field it experiences an electric force given by :

$F_{E}$ = |q| × E

Similarly when it is placed in a magnetic field it experiences a magnetic force given by :

$F_{B}$ = |q|×v×Bsinθ

When a particle is placed in electric field the particle gets accelerated.

The electric field has a direction, positive to negative. This is the direction that the electric field will cause a positive charge to accelerate. For example If a positive charge is moving in the same direction as the electric field vector the particle's velocity will increase. If it is moving in the opposite direction it will decelerate.  ( No change in direction of motion in this case)

When a particle is moved in magnetic field ,the magnetic force is perpendicular to velocity and magnetic field . Since force is perpendicular to velocity ,it only changes the direction of motion.

To know more about electric and magnetic forces kindly refer to the below link:

https://brainly.com/question/1594186

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