Question 1

What is Ohm's Law?

Accepted Answer

V = I × R. Voltage equals current times resistance. Rearranges to I = V/R and R = V/I.

Question 2

How do you use Ohm's Law?

Accepted Answer

Know any two values (V, I, R), calculate the third. Essential for circuit design and troubleshooting.

Question 3

What's the relationship between volts, amps, and watts?

Accepted Answer

Power (Watts) = Voltage (Volts) × Current (Amps). To find any value, divide or multiply: Amps = Watts/Volts, Volts = Watts/Amps.

Question 4

Is AWG or metric wire gauge better?

Accepted Answer

AWG (American Wire Gauge) uses arbitrary numbers where smaller = thicker. Metric (mm²) directly indicates cross-sectional area, making calculations easier.

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