Question

Which one or more of the following choices is (are) true regarding how a magnetic field acts on a charged particle. A magnetic field __________
1. can increase the speed of a moving particle.
2. can cause a moving particle to accelerate.
3. always exerts a force on a moving particle.
4. can exert a force on a stationary particle.

Answer 1

Answer:2. Can cause a moving particle to accelerate.

Explanation: A magnetic field around an object can cause the object to accelerate mainly because of the force exerted on the object by the Magnetic forces. The Operational model of an electric motor is directly based on the impact of Magnetic forces on the electrons moving inside the wire. The CYCLOTRON FREQUENCY is the frequency with which electrons rotate about the direction of a magnetic field as stated in classical physics.