Register
A lamp for which converts 70 W out of every 20 W into thermal energy the lamp is being used for the sole purpose of the lighting room. calculate the efficiency
225k views
11 votes
A lamp for which converts 70 W out of every 20 W into thermal energy the lamp is being used for the sole purpose of the lighting room.

calculate the efficiency

User Bigosmallm
by
5.8k points

1 Answer

9 votes

Answer:

71 % eff

Step-by-step explanation:

if 50 out of 70 watt goes to making light

50/70 = 71 %

User PRATHEESH PC
by
6.0k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

6.0m questions

7.9m answers

Other Questions

How does the capacitance of a parallel plate capacitor change with the geometry of the capacitor?
What distance is traveled by a police car that moves at a constant speed of 2.5 m/s for 20 s? Include the correct units with your answer. Please help ASAP! Physics
What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? Resistance is directly related to length. Resistance is directly related to the square
Explaining Wave Speed through Different Media Explain why the speed of light is lower than 3.0 × 108 m/s as it goes through different media.
Indy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest. Cindy’s average speed
Link Copied!