Question

The dimensional formula of linear charge density $\lambda$ is

• A. $\left[ M ^{-1} L ^{-1} T ^{+1} A \right]$
• B. $\left[ M ^{0} L ^{-1} T ^{+1} A \right]$
• C. $\left[ M ^{-1} L ^{-1} T ^{+1} A ^{-1}\right]$
• D. $\left[ M ^{0} L ^{-1} T ^{+1} A ^{-1}\right]$

Answer 1

Answer: (B)

Linear charge density $(\lambda)=\frac{Q}{L}$
$\lambda=\frac{[A T]}{[L]}=\left[ M ^{0} \,L ^{-1} \,T ^{1} \,A ^{1}\right]$