Question
Find the dimensions of:
- Linear momentum.
- Frequency.
- Pressure.
Linear momentum: $\text{mv}=[\text{MLT}^{-1}]$
Frequency: $\frac{1}{\text{T}}=[\text{M}^0\text{L}^0\text{T}^{-1}]$
Pressure: $\frac{\text{Force}}{\text{Area}}=\frac{[\text{MLT}^{-2}]}{\text{[L}^2]}=[\text{ML}^{-1}\text{T}^{-2}]$
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A current I flows in a conductor placed perpendicular to the plane of the paper.Indicate the direction of the magnetic field due to a small element d $\overrightarrow{l}$at point P situated at a distance $ \overrightarrow{r}$ from the element as shown in the figure.

