Understanding Ohm's Law

What is the total resistance of the circuit if it consists of a 20 ohm, a 5 ohm, and a 15 ohm resistor in series?

• 60 ohms

• 50 ohms

• 40 ohms

• 30 ohms

According to Ohm's Law, how is resistance related to voltage and current?

• Directly proportional to both voltage and current

• Inversely proportional to both voltage and current

• Directly proportional to voltage and inversely proportional to current

• Inversely proportional to voltage and directly proportional to current

If a circuit has a total voltage of 120 volts and a total resistance of 40 ohms, what is the current flowing through the circuit?

• 2 amps

• 3 amps

• 4 amps

• 5 amps

What is the voltage drop across a 20 ohm resistor if the current flowing through it is 3 amps?

• 30 volts

• 40 volts

• 50 volts

• 60 volts

According to Kirchhoff's Law, what should the sum of the voltage drops in a series circuit equal?

• The total resistance

• The total current

• The total voltage

• The total power