A charged particle is whirled in a horizontal circle on a frictio…

MCQ

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 the tension in the string.

A
Will increase.
B
Will decrease.
C
Will remain the same.
✓
May increase or decrease.

✓

Answer

Correct option: D.

May increase or decrease.

$B=B_0 j$
The tension is the strong may increases or decreases.

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