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Question

# If a charged particle projected in a gravity-free room deflects, thenthere must be a magnetic fieldthere must be an electric fieldboth fields cannot be zeronone of these

A
there must be an electric field
B
there must be a magnetic field
C
both fields cannot be zero
D
none of these
Solution
Verified by Toppr

#### Since there must be some external force which will cause the deflection of charge particle and it can be both magnetic force or electric force.Therefore, simultaneously both the fields cannot be zero therefore, option(C).Option(A) and (B) are saying that there should be electric field compulsory or magnetic field compulsory for deflection which is not true therefore, only option(C).

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