Atelevision uses 150 w of power. how much energy does it use in 20 seconds ?

 Energy used by television in 20 seconds = 3000 J

Explanation:

  We have expression for power, P = Work / Time

  Here we have power of television = 150 Watts

  Time of working of television = 20 seconds.

  We need to find energy it uses in 20 seconds, that is we need to find work done by electricity in 20 seconds.

  Work done = Power x Time = 150 x 20 = 3000 J

  Energy used by television in 20 seconds = 3000 J

a.   mass number from atomic number

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.