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Question

# Dimensional formula for electric field is _________

A
[ML2T3A1]
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B
[ML2T3A2]
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C
[MLT3A1]
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D
[M0L0T0A0]
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Solution

## The correct option is B [MLT−3A−1]Step 1: Identifying simplest formula for Electric fieldWe know that, E=Fq ....(1)Where, F is force and q is charge.Step 2: Calculationg DimensionsWe know that, Force F=m×a=[M]×[LT−2].Where m is mass anda is acceleration,And, Charge q=It=[A]×[T] Where I is current and t is timeSo, Dimensions of Electric field, using equation (1) [E]=[F][q]=[M][L][T−2][A][T] =[MLT−3A−1]Hence, correct Option is C

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