Question 1 of 15
What is the SI unit of electric current?
Electric current is measured in Amperes.
Question 2 of 15
What is the relationship between voltage, current, and resistance?
Ohm's Law states that voltage (V) equals current (I) times resistance (R).
Question 3 of 15
What is the SI unit of electrical resistance?
Electrical resistance is measured in Ohms.
Question 4 of 15
What is the SI unit of electrical power?
Electrical power is measured in Watts.
Question 5 of 15
Which of the following describes the flow of electric charge?
Electric current is the rate of flow of electric charge.
Question 6 of 15
What is the definition of voltage?
Voltage is the potential difference, also known as the electromotive force.
Question 7 of 15
What is the formula for calculating electrical power?
Power (P) is equal to voltage (V) multiplied by current (I).
Question 8 of 15
What type of charge do electrons carry?
Electrons carry a negative charge.
Question 9 of 15
What happens to the current in a series circuit?
In a series circuit, current is constant throughout the circuit.
Question 10 of 15
What happens to the voltage in a parallel circuit?
In a parallel circuit, voltage is constant across each branch.
Question 11 of 15
What is a circuit breaker used for?
A circuit breaker protects a circuit by limiting the current.
Question 12 of 15
Which component opposes the flow of current?
A resistor opposes the flow of current, based on its resistance value.
Question 13 of 15
What is the equivalent resistance of two 10-ohm resistors in series?
In series, resistors add up: 10 + 10 = 20 ohms.
Question 14 of 15
What is a good conductor of electricity?
Copper has a low resistance and allows current to flow easily.
Question 15 of 15
What is the name for the amount of work it takes to move an electric charge?
Voltage is defined as the work required to move a charge between two points.
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