Power is expressed in which of the following units?
a. Newtons c. Ohms
b. Joules d. Watts
ANS: D
Power is a measure of the rate at which work is being performed. Energy and work are measured in joules. One joule is the force of 1 N acting on a 1-kg object to move it 1 m. Ohms is the re-sistance an electrical circuit possesses.
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