Question

The dimensions of $\left(h/e\right)[h=$ Planck's constant, $e=electroniccharge]$ are same as that of

• A. Magnetic field
• B. Magnetic flux
• C. Electric field strength
• D. Electric flux

Answer 1

The correct option is B Magnetic flux

Plancks constant (h) has joule-seconds. dimensions are =$\left[M{L}^2{T}^{-1}\right]$

electron charge (e) will have $\left[TI\right]$

Dimension for h/e will be

$\left[M{L}^2{T}^{-2}{I}^{-1}\right]$

From the given options,

Dimension for magnetic moment will be $\left[L^{2}A\right]$

Dimension for magnetic flux will be $\left[M{L}^2{T}^{-2}{I}^{-1}\right]$

Dimension for electric flux will be $\left[M{L}^3{T}^{-3}{I}^{-1}\right]$

Dimension for electric field strength will be $\left[ML{T}^{-3}{I}^{-1}\right]$

Both magnetic flux and h/e will have same dimensions.