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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 [MLT3A1]
Step 1: Identifying simplest formula for Electric field
We know that,
E=Fq ....(1)

Where, F is force and q is charge.

Step 2: Calculationg Dimensions

We know that, Force F=m×a=[M]×[LT2].
Where m is mass anda is acceleration,

And, Charge q=It=[A]×[T]
Where I is current and t is time

So, Dimensions of Electric field, using equation (1)
[E]=[F][q]=[M][L][T2][A][T] =[MLT3A1]

Hence, correct Option is C

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