Register
A modem uses 8.4 W to operate, and its transformer draws 15 W of power. What is its percent efficiency?
171k views
0 votes
A modem uses 8.4 W to operate, and its transformer draws 15 W of power. What is its percent efficiency?

User Caulitomaz
by
7.8k points

1 Answer

11 votes

Answer:

Substitute these values in the power equation: Power = 10 amps × 120 volts = 1200 watts, or 1.2 kilowatts

User Ximyu
by
8.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.8m questions

11.4m answers

Other Questions

A piston-cylinder device fitted with stops in the cylinder walls contains 2.1 kg of water initially at 150 kPa and 30 °C. Heat is transferred to the system until the final temperature reaches 250 °C. The
An activated sludge plant is being designed to handle a feed rate of 0.438 m3 /sec. The influent BOD concentration is 150 mg/L and the cell concentration (MLVSS) is 2,200 mg/L. If you wish to operate the
A car has an initial speed of 10 m/s. It then undergoes a constant acceleration of 0.05 m/s^2 over a distance of 5 km. Determine: a) The car final speed. b) The time needed to travel the 5 km.
Teresa is emotionally volatile, particularly with friends and boyfriends. She is extremely dramatic about even the smallest disappointments and is sexually and behaviorally very impulsive. Teresa would
Vitrification is a process of: a. Chemical reaction bonding of aggregate ceramic powder b. Cementing aggregate ceramic powder with a liquefied material c. Solid-state diffusion of aggregate ceramic powder
Link Copied!