Engineering•Easy

Ohm's Law Circuit

Engineering challenge: Ohm's Law (V = IR) relates voltage, current, and resistance. Master it to solve basic circuit problems.

Scenario

A 12V battery powers a series circuit with a 4Ω resistor and a 2Ω resistor. Apply Ohm's Law and Kirchhoff's Voltage Law.

Question 1

What is the total resistance of the circuit (4Ω and 2Ω in series)?

Question 2

What current flows through the circuit? (V = 12V, R = 6Ω)

Question 3

What voltage drops across the 4Ω resistor?

Question 4

Two 6Ω resistors are connected in PARALLEL. What is the equivalent resistance?

Question 5

Which quantity is the same through every component in a simple series circuit?

CurrentVoltage dropResistancePower

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