Question

An operating television set draws 0.71 ampere of current when connected to a 120-volt outlet. Calculate the time it takes the television to consume 3.0 x 105 joules of electronic energy. [Show all work, including the equation and substitution with units.]

Answer 1

It will take 10559.44 sec to consume energy

Step-by-step explanation:

It is given current i = 0.71 A

Voltage V = 120 volt

According to ohm's law resistance will be
`R=(V)/(i)`

`R=(120)/(0.71)=169.01ohm`

Energy consumed by the television is
`E=3* 10^5J`

Energy consumed is given by
`E=i^2Rt`

`3* 10^5=0.71^2* 169.01* t`

t = 10559.44 sec

So it will take 10559.44 sec to consume energy