A charged particle is whirled in a horizontal circle on a frictionless table by attaching it to a string fixed at one point. If a magnetic field is switched on in the vertical direction, how will it affect the tension in the string ?
Answer & explanation
Correct answer: option 4
If the particle experiences a force outward in the direction of the radius, tension T will increase.
If the particle experiences a force inward in the direction of the radius towards the center, tension T will decrease.