Ohm's Law (Junior Cert Wood Technology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is voltage (V) in an electric circuit?
What is voltage (V) in an electric circuit?
Electric potential difference in volts
What unit is used to measure current (I)?
What unit is used to measure current (I)?
Amperes (A)
What does resistance (R) measure in a circuit?
What does resistance (R) measure in a circuit?
How much a material resists current flow
What is the mathematical expression of Ohm's Law?
What is the mathematical expression of Ohm's Law?
V = IR
How can Ohm's Law be rearranged to solve for current?
How can Ohm's Law be rearranged to solve for current?
I = V/R
If I = 2A and R = 3Ω, what is the voltage (V)?
If I = 2A and R = 3Ω, what is the voltage (V)?
6V
If V = 12V and R = 6Ω, what is the current (I)?
If V = 12V and R = 6Ω, what is the current (I)?
2A
If V = 9V and I = 1.5A, what is the resistance (R)?
If V = 9V and I = 1.5A, what is the resistance (R)?
6Ω
What is the function of a battery in a simple circuit?
What is the function of a battery in a simple circuit?
Provides voltage that drives current
What is the function of a resistor in a circuit?
What is the function of a resistor in a circuit?
Limits current flow based on resistance
If resistance stays constant, what happens when voltage increases?
If resistance stays constant, what happens when voltage increases?
Current increases
What limits the simple use of Ohm's Law in real circuits?
What limits the simple use of Ohm's Law in real circuits?
Temperature affects resistance