Physics, 05.02.2020 02:57, Savannahpeeler1001

The efficiency of a device such as a lamp can be calculated using this equation:

efficiency = (useful energy transferred ÷ energy supplied) × 100

using the formula, calculate the efficiency of the lamp shown in the diagram above.

a) 7%
b) 25%
c) 70%
d) 75%

The efficiency of a device such as a lamp can be calculated using this equation: efficie

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 06:30, corcoranrobert1959

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Answers: 1

continue

Physics, 22.06.2019 17:00, ramos1997

Amajor difference radio waves, visible light, and gamma rays is the of the photons, which results in different photon frequencies and wavelengths

Answers: 1

continue

Physics, 22.06.2019 19:40, mcmccann4317

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc

Answers: 1

continue

Physics, 22.06.2019 21:00, cathydaves

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver

Answers: 2

continue

Do you know the correct answer?

The efficiency of a device such as a lamp can be calculated using this equation:

efficie...