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3 cards from this section. Quick, good the night before a test.
What is the formula for electric current?
Think about how charge and time relate to current.
What unit is used to measure electric current?
What do you call the current unit derived from André-Marie Ampère?
What does Ohm's Law establish?
Remember the formula V = I * R.
True or False: Resistivity is the same for all materials.
Consider different materials and their electrical properties.
You have a series circuit with a 12V battery and three resistors: 2Ω, 3Ω, and 5Ω. What is the current flowing through the circuit?
Add the resistances to find the total before calculating current.
Calculate the internal resistance of a cell if the EMF is 9V and the current drawn is 1A, and the terminal voltage is 8V.
Remember to isolate r in the rearranged equation.
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