A person uses a simple machine to help him perform a difficult task. He performs 25 J of work on the machine, which performs 22 J of work in return. What is the machine’s efficiency?

What challenges did you encounter during the circuit training program?

Rohit is trying to tune an instrument

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.