A motor operating on 100 V draws a current of 1 A. If the efficiency of the motor is 
, then the loss of power in units of 
is
Text Solution
Verified by ExpertsThe correct answer is:
B
The motor operates at 100 V and draws 1 A, so the total electrical power input is:
With an efficiency of 
, only 
of the input power is used for the motor's work, while the rest is lost as heat. The output power is:
The power lost is:
Since 
and 
, we convert the lost power into calories per second:
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