Which of the following equations is dimensionally incorrect?

Where $t=$time, $h=$height, $s=$surface tension, $\theta =$angle, $\rho =$density $,a,r=$radius, $g=$ the acceleration due to gravity, $V=$volume, $p=$pressure, $W=$work done, $\tau =$torque, $ϵ=$permittivity, $E=$electric field, $J=$current density, $L=$length.

• A

  $W=\tau \theta$
• Correct answer
  B

  $V=\frac{\pi p{a}^4}{8\eta L}$
• C

  $h=\frac{2\mathrm{scos}\theta }{\rho rg}$
• D

  $J=ϵ\frac{\partial E}{\partial t}$

Hence, the correct answer is option: 'B'.