The unit of $e.m.f.$ is
Joule
Joule-Coulomb
Volt-Coulomb
Joule/Coulomb
Temperature can be expressed as a derived quantity in terms of any of the following
Which of the following is a derived unit
The damping force on an oscillator is directly proportional to the velocity.The units of the constant of proportionality are
Which of the following is not a unit of energy
Which is not a physical quantity