Ohm's Law
Flashcard
•
Physics
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is Ohm's Law?
Back
Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. It is usually expressed as V = I × R.
2.
FLASHCARD QUESTION
Front
What is the formula to calculate current in a circuit?
Back
The formula to calculate current (I) in a circuit is I = V / R, where V is the voltage and R is the resistance.
3.
FLASHCARD QUESTION
Front
What is the unit of measurement for voltage?
Back
The unit of measurement for voltage is Volts (V).
4.
FLASHCARD QUESTION
Front
What is the unit of measurement for current?
Back
The unit of measurement for current is Amps (A).
5.
FLASHCARD QUESTION
Front
What is the unit of measurement for resistance?
Back
The unit of measurement for resistance is Ohms (Ω).
6.
FLASHCARD QUESTION
Front
If a circuit has a voltage of 12 volts and a resistance of 4 ohms, what is the current?
Back
Using Ohm's Law, I = V / R = 12V / 4Ω = 3 Amps.
7.
FLASHCARD QUESTION
Front
How does increasing resistance affect current in a circuit?
Back
Increasing resistance in a circuit decreases the current, assuming the voltage remains constant.
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