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Questions and Answers
What is the mathematical expression for Ohm's law?
What is the mathematical expression for Ohm's law?
- $V = I + R$
- $V = I^2R$
- $V = rac{I}{R}$
- $V = IR$ (correct)
In Ohm's law, what happens to the voltage if the resistance increases?
In Ohm's law, what happens to the voltage if the resistance increases?
- Voltage becomes zero
- Voltage decreases (correct)
- Voltage increases
- Voltage remains constant
If the current in a circuit doubles, what happens to the voltage according to Ohm's law?
If the current in a circuit doubles, what happens to the voltage according to Ohm's law?
- Voltage remains constant
- Voltage halves
- Voltage quadruples
- Voltage doubles (correct)
What principle is expressed by Ohm's law?
What principle is expressed by Ohm's law?
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Which quantity does Ohm's law state to be inversely proportional to the current in a circuit?
Which quantity does Ohm's law state to be inversely proportional to the current in a circuit?
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What happens to the current in a circuit according to Ohm's law if the voltage is doubled?
What happens to the current in a circuit according to Ohm's law if the voltage is doubled?
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Voltage is the rate at which electric charge flows through a certain point in the circuit.
Voltage is the rate at which electric charge flows through a certain point in the circuit.
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Resistance is a material's tendency to resist (oppose) the flow of charge (current).
Resistance is a material's tendency to resist (oppose) the flow of charge (current).
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Electric current is generated through the movement of protons.
Electric current is generated through the movement of protons.
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