Question 1

What is Ohm's law?

Accepted Answer

Ohm's law describes the relationship between voltage (V), current (I), and resistance (R): V = I × R. Voltage equals current multiplied by resistance.

Question 2

How to calculate electrical power?

Accepted Answer

Power P = V × I = I²R = V²/R. Power equals voltage multiplied by current.

Question 3

What are common power ratings for household appliances?

Accepted Answer

LED bulb: ~5–15W, fan: ~50–75W, TV: ~100–200W, air conditioner: ~1,000–3,000W.

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