A bob of mass m is tied with a thread and is made to move in a circular path on a frictionless table surface about point 'O' as shown in diagram. A hypothetical electric field in radial direction exists along the table surface. In this condition the bob is uncharged and tension in the thread is T. If bob is given some charge-

Options

A. Tension in thread must increase
B. Tension in thread may increase or decrease
C. Tension in thread will remain unchanged
D. Tension in thread must decrease

Answer

B

Explanation

Tension may increase or decrease depending on the nature of charge given to sphere.