With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?
Correct answer: D. 60 W
- A. 10 W
- B. 20 W
- C. 40 W
- D. 60 W
Explanation
In a parallel circuit, the source supplies the sum of the power absorbed by all branches. Thus, 20 W + 20 W + 20 W = 60 W.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Circuit Analysis
394 free Circuit Analysis MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Circuit Analysis questions
If/, R and t are the current, resistance and time respectively, then according to Joule's law heat produced will be proportional to_______________?
Conductance : mho :: ____________?
One newton meter is same as_____________?
When current flows through heater coil it glows but supply wiring does not glow because______________?
Temperature co-efficient of resistance is expressed in terms of___________?
A nichrome wire used as a heater coil has the resistance of 2 £2/m. For a heater of 1 kW at 200 V, the length of wire required will be_____________?