What is the difference between electromotive force and potential difference?
The electromotive force and the potential difference in a circuit are very similar concepts as they are both names for energy per unit charge within a circuit and they both use the same unit, Volts. The difference between the two is that the electromotive force is the voltage, the energy per unit charge, provided by an electrical source, while the potential difference is simply the difference in voltage between two points within the circuit.
CL
Related Physics A Level answers
All answers ▸An unknown capacitor is charged to 6v, its maximum value, then discharged through a 1k ohm resistor. If the capacitor voltage is 3v, 0.3 seconds after starting to discharge, what is the capacitance of the unknown capacitor?
A car of mass M and a maximum power output of P is on an rough inclined plane Θ to the horizontal. What is the maximum velocity (v). Coefficient of friction=μ and air resistance=kv where k is constant
A child is standing on a walkway that is moving at 2 metres per second and decides to turn around and walk back to the start at 2 metres per second. Explain why the child cannot reach the start of the walkway at this speed.
Why is potential energy negative? What does that even mean?