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2 cards from this section. Quick, good the night before a test.
What is the formula for Ohm's Law?
Consider the three quantities it relates.
Define voltage.
Think of it as the push that drives current.
What does Ohm's Law relate?
Look for the three core electrical parameters.
True or False: If you increase the resistance while keeping the voltage constant, the current will increase.
Remember the inverse relationship?
Design a circuit to light an LED with a 12V supply, requiring a current of 20mA. What resistor will you choose, and why?
Calculate with Ohm's Law and verify the LED ratings.
If a circuit has a 45Ω resistor and the current measured is 2A, what is the voltage across the resistor?
Plug in the numbers correctly for voltage.
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