Physics Regents Review - Electricity

Question	Answer
The unit which describes electric current in terms of how much charge passes a given point in a conductor is called the _____________, which is represented by _______________.	Ampere, circle with an A in it.
In order for current to flow in a wire there must be a complete circuit, and a ________ _________, or ___________.	Potential Difference, voltage v
Metals and other materials with many free electrons are called ________, because they allow current to pass easily.	Conductors
Things that don’t allow current to pass easily, like glass, rubber, and plastic, are called _______________.	Insulators
Resistance	The measurement of how easily current flows through a conductor.
Generally, resistance decreases when a conductor’s length__________, diameter ____________, and temperature ___________.	Decreases, increases, decreases
In parallel circuits, the total resistance is always ______ than the smallest resistor.	less
Power = ?	Volts * Amps
The power used through time is found by multiplying ________ and __________, and is expressed in __________.	Power, Time, Joules
Watt	The unit of electrical power.

Resource summary

	Created by Alex Declan over 10 years ago