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Questions and Answers
What is the formula to calculate electrical power?
What is the formula to calculate electrical power?
- P = I^2R (correct)
- P = IR^2
- P = VI
- P = V^2/R
In a series circuit, how does the total resistance compare to the individual resistances?
In a series circuit, how does the total resistance compare to the individual resistances?
- It is equal to the average of the individual resistances
- It is always greater than the sum of the individual resistances
- It is equal to the sum of the individual resistances (correct)
- It is always less than the sum of the individual resistances
What happens to the brightness of bulbs in a parallel circuit if one of the bulbs is removed?
What happens to the brightness of bulbs in a parallel circuit if one of the bulbs is removed?
- All bulbs become brighter
- All bulbs become dimmer
- The brightness of other bulbs remains the same (correct)
- Only the removed bulb becomes dimmer
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