Question #348845

An electromagnet exerts a force of 15 N and moves a soft iron armature through a distance of 12 mm in 50ms. Determine the power consumed

Expert's answer

Given:

"F=15N;"

"d=12mm=0.012m;"

"t=50ms=0.05s."

Find:

"P-?"

**Solution:**

Power consumed = (Work done by electromagnetic force)/(time);

"P=\\frac{W}{t};" "W=Fdcos\\alpha" ; here "\\alpha=0;" So,

"P=\\frac{Fd}{t}=\\frac{15N\\times0.012m}{0.05s}=3.6W."

**Answer:**

"P=3.6W."

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