Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
JEE Main & Advanced
Physics
Current Electricity, Charging & Discharging Of Capacitors / वर्तमान बिजली, चार्ज और कैपेसिटर का निर
Question Bank
Heating Effect of Current
question_answer
If a 2 kW boiler is used everyday for 1 hour, then electrical energy consumed by boiler in thirty days is [BHU 2004]
A) 15 unit
B) 60 unit
C) 120 unit
D) 240 unit
Correct Answer:
B
Solution :
Energy \[=P\times t\] = 2 ´ 1 ´ 30 = 60 kWH = 60 unit