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4 cards from this section. Quick, good the night before a test.
What is the unit of electric current?
Think about the amperage used in electrical appliances.
Define voltage.
Consider what pushes electrons in a wire.
What is the formula for calculating Ohm's Law?
Remember the relationship defined by Ohm's Law.
True or False: Voltage is the opposition to the flow of current.
Think about what motivates the flow of electrons.
If a circuit has a voltage of 24V and consists of two resistors, one of 4Ω and the other of 2Ω in series, find the current flowing through the circuit.
First, add the resistances before using Ohm's Law.
In a parallel circuit with two resistors of 3Ω and 6Ω connected to a 12V battery, calculate the total current flowing from the battery.
Remember to calculate equivalent resistance for parallel circuits!
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