An electronic device operates with the following power schedule during a 1 ,h test…
PHYSICS · Multi-part · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits
Problem
An electronic device operates with the following power schedule during a 1\,h test cycle:
• P1=500W for the first 10\,min
• P2=800W for the next 20\,min
• P3=300W for the last 30\,min.
(i) Calculate the total electrical energy consumed during the entire 1\,h cycle in joules.
(ii) Convert the result of part (i) into kWh.
(iii) If electrical energy costs ₹6.50 per kWh, determine the cost of running the device for one complete test cycle, correct to the nearest paisa.