Question

A flat screen TV uses 120 Watts. How much energy is used up if it is left on for 15 minutes? Question 25 options: 4 J 15 J 0.67 J 108,000 J

Answer 1

Answer:

Option d (108,000 J) is the correct answer.

Explanation:

The given values are:

Power,

P = 120 Watts

Time,

t = 15 min.

i.e.,

 = 900 sec

As we know,

⇒ $P=\frac{W}{t}$

So,

⇒ $W=P\times t$

On substituting the given values, we get

⇒      $=120\times 900$

⇒      $=108,000 \ J$