Quiz on Circuit Theory

What happens to the current in a series circuit if one component burns out?

• Current becomes inactive

• Current increases

• Current decreases

• Current remains the same

What happens to the current in parallel branch 1 when the resistance R1 is lower than R2 and R3?

• The current reduces

• The current increases

• The current remains the same

• The current stops

If R1 = 1 kΩ, R2 = 3 kΩ, and R3 = 2 kΩ, what is the total resistance R_{eq} in the circuit?

• 6 kΩ

• 0.55 kΩ

• 1.5 kΩ

• 0.75 kΩ

What is the total resistance in the circuit if R1 = 20 ohms, R2 = 30 ohms, and R3 = 50 ohms?

• 100 ohms

• 50 ohms

• 60 ohms

• 80 ohms

How do you calculate the total voltage (Vt) in a series circuit with a total current (I) of 2 amps and total resistance (R) of 100 ohms?

• Vt = I * R

• Vt = I / R

• Vt = R / I

• Vt = I + R

What is the total voltage (Vt) in the circuit if the total current is 2 amps and the total resistance is 100 ohms?

• 200 volts

• 150 volts

• 100 volts

• 50 volts

How is the total voltage (Vt) calculated in this circuit?

• Vt = I * Rt

• Vt = I / Rt

• Vt = Rt / I

• Vt = I + Rt

If the total current (I) is 2 amps and the total resistance (Rt) is 100 ohms, what is the total voltage (Vt)?

• 200 volts

• 50 volts

• 150 volts

• 100 volts

What is the formula for power in a resistor using current and resistance?

• P = I² * R

• P = V² / R

• P = I * V

• P = V * I_total

How is total power calculated in an electric circuit?

• P_total = V * I_total

• P_total = I² * R

• P_total = V² / R

• P_total = I * V