Question

A physical quantity $\vec{ S }$ is defined as $\vec{ S }=\frac{(\vec{ E } \times \vec{ B }) }{ \mu_{0}}$, where $\vec{ E }$ is electric field, $\vec{ B }$ is magnetic field and $\mu_{0}$ is the permeability of free space. The dimensions of $\vec{ S }$ are the same as the dimensions of which of the following quantity(ies)?

• A. $\frac{\text { Energy }}{\text { Charge } \times \text { Current }}$
• B. $\frac{\text { Force }}{\text { Lenght } \times \text { Time }}$
• C. $\frac{\text { Energy }}{\text { Volume }}$
• D. $\frac{\text { Power }}{\text { Area }}$

Answer 1

Answer: (B), (D)

$\frac{\text { Force }}{\text { Lenght } \times \text { Time }}$

Answer 2

(B) $\frac{\text { Force }}{\text { Lenght } \times \text { Time }}$
(D)$\frac{\text { Force }}{\text { Lenght } \times \text { Time }}$