NEET 2016 Physics question

Out of the following options which one can be used to produce a propagating electromagnetic wave?

(1)A charge moving at constant velocity
(2)A stationary charge
(3)A chargeless particle
(4)An accelerating chargeCorrect

Answer: (4)

Solution

A propagating electromagnetic wave is radiated only by a charge that is accelerated (for example an oscillating charge); the time-varying electric and magnetic fields of such a charge sustain each other and travel outwards. A

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Question ID VK-091842