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A 20 ohm resistor carries a current of 0.25 ampere. The power dissipated is:
a.
1.25 watt
b. 5 watt
c. 2.50 watt
d. 10 watt
Your answer "a" is CORRECT!
P = I squared x R
= 0.25 x 0.25 x 20
= 1.25 watts.
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