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The work done by the motor per unit time is called ________.
power
energy
acceleration
momentum
power
The rate at which work is done or energy is transferred per unit time is known as power. In the context of a motor, electrical or mechanical power represents how fast it can perform work, measured in watts (W) or horsepower (HP).
The rate at which work is done or energy is transferred per unit time is known as power. In the context of a motor, electrical or mechanical power represents how fast it can perform work, measured in watts (W) or horsepower (HP).
Think of two water pumps lifting the same amount of water to a tank. If Pump A does it in 1 minute and Pump B does it in 5 minutes, Pump A has a higher power rating because it does the same work in less time.
Remember 'WETPower': Work over Energy/Time тЖТ P = W/t.
P=tWтАЛ тАФ Power equals work done divided by time
P=tEтАЛ тАФ Power equals energy consumed divided by time
P=F├Чv тАФ Power equals force multiplied by velocity
Power (P) is defined mathematically as the ratio of work done (W) or energy (E) to the time taken (t), given by the formula P=tWтАЛ. Since work is measured in joules and time in seconds, the SI unit of power is joules per second, which is named the watt (W).
Power is a scalar quantity.
The SI unit of power is Watt (W) or Joule per second (J/s).
1 Horsepower (HP) equals 746┬аWatts.
Commercial unit of electrical energy is kilowatt-hour (kWh).
Helps evaluate the efficiency and performance capacity of electrical and mechanical motors.
Rating electric motors in pumps, fans, and industrial machinery.
Determining electricity consumption in household appliances.
Energy is the capacity to do work, whereas power is the rate at which work is done.
Option B (energy), Option C (acceleration), and Option D (momentum) represent completely different physical quantities with distinct units.
A is correct тАФ The work done by a motor per unit time is called power.
Always pay close attention to dimensional units in physics questions; 'per unit time' almost always implies a rate with time in the denominator, such as velocity (displacement/time) or power (work/time).
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