AET610 -Basics of DC Circuits -Resistors -Quiz 2

What does Ohm's Law state?

• Voltage is inversely proportional to current

• Voltage is directly proportional to current

• Voltage and current are unrelated

• Voltage and current have a quadratic relationship

If the voltage across a resistor is 12 volts and the current through it is 4 amps, what is the resistance?

• 3 ohms

• 16 ohms

• 48 ohms

• 8 ohms

If the resistance in a circuit is kept constant while the voltage increases, what happens to the current?

• Increases

• Decreases

• Remains constant

• Becomes zero

A resistor has a resistance of 220 ohms. If a current of 0.5 amps flows through it, what is the voltage across the resistor?

• 440 volts

• 0.22 volts

• 110 volts

• 0.11 volts

What is the unit of resistance?

• Amps

• Volts

• Ohms

• Watts

In a series circuit, how does the total resistance compare to the individual resistances?

• It is greater than any individual resistance

• It is equal to the sum of individual resistances

• It is smaller than any individual resistance

• It is equal to the product of individual resistances

In a parallel circuit, how does the total resistance compare to the individual resistances?

• It is greater than any individual resistance

• It is equal to the sum of individual resistances

• It is smaller than any individual resistance

• It is equal to the product of individual resistances

Three resistors of 4 ohms, 6 ohms, and 8 ohms are connected in series. What is the total resistance?

• 18 ohms

• 2.67 ohms

• 12 ohms

• 48 ohms

Two resistors of 10 ohms and 20 ohms are connected in parallel. What is the equivalent resistance?

• 30 ohms

• 5 ohms

• 6.67 ohms

• 2.5 ohms

If three identical resistors are connected in parallel and each has a resistance of 30 ohms, what is the equivalent resistance?

• 10 ohms

• 90 ohms

• 20 ohms

• 270 ohms