Electrical Engineering - Energy and Power
Exercise : Energy and Power - General Questions
- Energy and Power - General Questions
- Energy and Power - True or False
16.
For 12 V and 40 mA, the power is
17.
A 220
resistor dissipates 3 W. The voltage is

18.
A 3.3 k
resistor dissipates 0.25 W. The current is

Answer: Option
Explanation:
W = I2R
I = square root(W/R)
= square root( 0.25/(3.3x1000) )
= 0.0087038828
= 8.7 mA
19.
A half-watt is equal to how many milliwatts?
20.
Three hundred joules of energy are consumed in 15 s. The power is
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