EMF (Electromotive force)
refers to the ability of a circuit to do work on electrically charged particles.
electromagnetic force
Since this work is done by the ___________________________________, the force exerted on the charge will be proportional to the magnitude of the charge.
potential difference
is defined to be the work done in moving a unit test charge from one point to another.
Energy from an electrical energy source (e.g. cell, battery)
will give energy to charges to enable them to flow.
unit charge
The EMF of an electrical source is the work done by the source in driving a ________________ around a complete circuit.
V = W / Q
formula for voltage
voltmeter
To measure the potential difference across an electrical component, the ___________ is connected in parallel to it.
sum
The EMF of the circuit is the _____ of the p.d. across all the components in the circuit.