Physics Regents Review - Electricity

Flashcards by Alex Declan, updated more than 1 year ago
 Created by Alex Declan over 6 years ago
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Description

Some key things you need to know in the electricity unit for the physics regents.

Resource summary

 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.

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