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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 1 - Electrostatics > A ring of radius R carries a charge +q. A test charge −q0 is released on its axis at a distance 3–√R from its centre. How much kinetic energy will be acquired by the test charge when it reaches at the centre of the ring ?

A ring of radius R carries a charge +q. A test charge −q0 is released on its axis at a distance 3–√R from its centre. How much kinetic energy will be acquired by the test charge when it reaches at the centre of the ring ?

The number of lines of forces coming out from +1 coulomb charge is