What is the difference between an electromotive force (EMF) and a voltage drop.

a. An EMF is the voltage source in a circuit, while a voltage drop is the amount of voltage lost across a component.
b. A voltage drop is the voltage source in a circuit, while an EMF is the amount of voltage lost across a component.
c. An EMF and a voltage drop are the same thing.
d. An EMF and a voltage drop have no function in an electrical circuit.
Answer: a. An EMF is the voltage source in a circuit, while a voltage drop is the amount of voltage lost across a component.