In an electromagnetic system, the ratio of electric flux to magnetic flux has dimensions MᴾLᑫTᴿAˢ. The values of Q and R are:
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Question

In an electromagnetic system, the ratio of electric flux to magnetic flux has dimensions MᴾLᑫTᴿAˢ. The values of Q and R are:

G1 Physics · Accepted Answer

Electric flux is ΦE = EA, and magnetic flux is ΦB = BA. Hence, ΦE/ΦB = E/B. Using the electromagnetic relation for a wave, E/B has the dimensions of speed. Therefore, [E/B] = LT⁻¹. Comparing with MᴾLᑫTᴿAˢ, we obtain Q = 1, R = -1. Correct option: B.