Question

5- Which uses more energy a 200 watt television set in 40 minutes or 100 watt in 10 min​

Answer 1

Answer:

2nd will use more energy than 1st (TV)

Explanation:

Because if 2nd use 100 watt in 0 minutes so it will use 400 watts in 40 minutes & it is more than 1st (TV).

Answer 2

Answer:

case 1,

P= 200W= 0.2kW

t= 40min= 2/3hr

P=E/t or E=Pt

E= 0.2*2/3

= 1.33kWh

Case 2

P= 100W= 0.1kW

t= 10min= 1/6hr

E= Pt

= 0.1*1/6

= 0.016kWh

Therefore television of 200w in 40min uses more energy