Question

If a physical quantity has the units ampere metre per second squared, then what is its dimensional formula?

(A) [ILT^-2]

(B) [ALT^-2]

(C) [IMS^-2]

(D) [AMS^-2]

Answer 1

Correct option is (B) [ALT^-2]

Ampere = [A].00

Length = [L]

Time = [T]

The unit of physical quantity = ampere-metre / second²

= [A][L] / [T²]

So, dimensional formula of physical quantity is [ALT^-2].