alleryA good solar cell has an efficiency of about 15%. If a solar panel receives 100 watt of power from solar radiation, what is its electrical power output?
A85 watt
B100 watt
C15 watt
D1.5 watt
Answer & Solution
Correct answer: C. 15 watt
1. Efficiency 15% means output is 15% of the input power.
2. Output = 15% of 100 W = 0.15 × 100 = 15 W.
3. 85 W (option A) is the wasted part, not the output, a trap.
4. 100 W (option B) ignores losses, so it is wrong.
5. 1.5 W (option D) misplaces the decimal, so it is wrong.
6. So the electrical output is 15 watt.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 5 "Towards Green Energy", p.66_
Keep practising Environmental & Disaster Management
Browse all Environmental & Disaster Management questions for Maharashtra SSC (Class 10), or explore more Science topics.
Related questions
Drag each rider to its orbit bandSort each disaster into its typeThe 2014 disaster at Malin village in Tal. Ambegaon, Dist. Pune was an example of which tyWhich emergency helpline number is correctly matched to its service?Which item belongs in a standard first aid kit as listed in the chapter?Which of the following is an objective of conducting a mock drill?A practice in which an apparent situation of disaster is created to check the reaction timHow many divisions of the National Disaster Response Force are working in the country, wit