NEETPhysicsWork, Power and Energy
An electric motor rated at 2 kW operates continuously for 30 minutes . The total electrical energy consumed by the motor is
Options
- A3.6 10⁶ J
- B6 10⁴ J
- C3.6 10³ J
- D60 J
Correct answer
A. 3.6 10⁶ J
Step-by-step solution
The electrical energy consumed is given by E = P t Given power P = 2 kW = 2000 W Time t = 30 minutes = 30 60 s = 1800 s Therefore, E = 2000 1800 = 3600000 J = 3.6 10⁶ J Answer: 3.6 10⁶ J