Question 9. Which of the following groups have different dimensions? (a) Potential difference, EMF, voltage (b) Pressure, stress, Youngs modulus (c) Heat, energy, work done (d) Dipole moment, electric flux, electric field Answer
Answer. The quantities in the group (a), (b) and (d) i.e. (Velocity, Speed), (Pressure,WorkVolume) ( Pressure , Work Volume ) and (Work, Energy) have the same dimensions. Hence I and F cannot have the same dimensions.
