Electric Circuits

What is Ohm's Law?

• Ohm's Law relates the voltage, current, and resistance in an electrical circuit.

• Ohm's Law is a principle in biology related to genetics

• Ohm's Law is a mathematical equation used in chemistry

• Ohm's Law is the study of sound waves in physics

What is the formula for calculating resistance in a circuit?

• R = V/I

• R = V + I

• R = I/V

• R = V x I

In a series circuit, how does the current flow through the components?

• In a parallel path

• In a zigzag pattern

• In a random order

• In a series circuit

What happens to the total resistance in a parallel circuit as more resistors are added?

• The total resistance increases

• The total resistance stays the same

• The total resistance decreases

• The total resistance becomes negative

What is the formula for calculating electric power in a circuit?

• P = V - I

• P = V / I

• P = V * I

• P = V + I

What is the difference between AC and DC currents?

• AC current and DC current both flow in one direction only.

• AC current changes direction periodically, while DC current flows in one direction only.

• AC current flows in one direction only, while DC current changes direction periodically.

• AC current and DC current both change direction periodically.

In a series circuit, how does the voltage drop across each component compare to the total voltage?

• The voltage drop across each component is greater than the total voltage

• The voltage drop across each component is less than the total voltage

• The voltage drop across each component is unrelated to the total voltage

• The voltage drop across each component adds up to the total voltage

What is the total resistance in a parallel circuit with three resistors of 2 ohms, 4 ohms, and 6 ohms?

• 3 ohms

• 1.0909 ohms

• 12 ohms

• 0.6667 ohms

What is the unit of measurement for electric power?

• watt

• gallon

• pound

• meter

What is the frequency of AC current in most household electrical systems?

• 100 Hz

• 120 Hz

• 50 Hz

• 60 Hz