Electricity Flashcards
0
Q
What is an electromagnet?
A
A coil of current-carrying wire with the magnetic field strongest at the two ends of the coil, the “north” and “south” poles
1
Q
What is magnetism?
A
A force that acts between certain objects
2
Q
A direct current
Alternating current
A
Flows continuously in the same direction.
Periodically reverses direction.
3
Q
A circuit is
A
A pathway for the movement of electrons
4
Q
Electromotive force (emf)
A
An external force exerted on electrons to make them flow through a conductor. Measured in volts
