Magnetism Key Words Flashcards
North Pole
The pole of a magnet that points toward the North
Ohms
The unit of resistance, symbol Ω.
Parallel
A circuit in which there are two or more paths or branches for the current.
Positive
The charge on a proton, or on an object that has had electrons transferred from it.
Potential difference
A measure of the push of a cell or battery, or the energy that the cell or battery can supply.
Proton
A positively charged particle found in atoms.
Rating
The value of potential difference at which a cell or bulb operates.
Relay
Electrical device that uses current flowing through it in one circuit to switch on and off a current in a second circuit.
Repel
Be pushed away from each other, for example, like magnetic poles repel or like electrical charges repel.
Resistance
How difficult it is for current to flow through a component in a circuit.
Series
A circuit in which components are joined in a single loop.
South Pole
The pole of a magnet that points towards the south.
Switch
A component that controls the current by making or breaking the circuit.
Voltage
A measure of the strength of a cell or battery used to send a current around a circuit.
Voltmeter
A device for measuring voltage.
