Understanding Ohm's Law and Series Circuits

What is the equivalent resistance of a circuit with resistors of 2 ohms, 4 ohms, and 3 ohms in series?

• 6 ohms

• 12 ohms

• 9 ohms

• 7 ohms

Using Ohm's Law, what is the current in a circuit with a 36-volt source and an equivalent resistance of 9 ohms?

• 4 amps

• 3 amps

• 5 amps

• 2 amps

In the revised example, what is the equivalent resistance when the resistors are 12 ohms, 14 ohms, and 13 ohms?

• 42 ohms

• 40 ohms

• 41 ohms

• 39 ohms

What is the current in the revised circuit with a 48-volt source and an equivalent resistance of 39 ohms?

• 1.5 amps

• 1.23 amps

• 1.75 amps

• 2 amps

What is the first step in solving a series circuit problem using Ohm's Law?

• Identify the power source

• Calculate the total voltage

• Find the equivalent resistance

• Determine the current direction