Practice Voltage And Resistance (B.5.2) - Theme B: The Particulate Nature of Matter

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9 questions

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Exercise
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6 sample questions

Question 1.
Define voltage.
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Think about the energy that drives the current in a circuit.
Question 2.
What unit is resistance measured in?
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It starts with the letter 'O.'
3Question 3.
What does Ohm's Law state?
- V = IR
- V = I/R
- I = VR
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Remember the relationship between these terms.
4Question 4.
True or False: Increasing resistance in a circuit with fixed voltage will increase the current.
- True
- False
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Think about the equation and how the values relate.
Question 5.
Calculate the power used by a 10Ω resistor with a 5V voltage supply.
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Use the power formula derived from Ohm's Law.
Question 6.
A circuit consists of a 12V battery connected across two resistors of 4Ω and 8Ω in series. What is the current flowing through the circuit?
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Calculate total resistance first before applying Ohm's Law.

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