Question

which uses more energy ,a 250 W TV set in 1hr,or a 1200 w toaster in 10 minutes?​

Answer 1

Answer:

The energy consumed by the toaster is more than the energy consumed by the television.

Explanation:

Television:

Power, P = 250 W

Time, t = 1 hrs

Energy, e1 = P * t = 250 * 1 = 250 W hours

Toaster:

Power, P = 1200 W

Time, t = 10 min = 10/60 = 1/6 hrs

Energy, e2 = P * t = 1200/6 = 600 W hours

Clearly, the energy consumed by the toaster is more than the energy consumed by the television.

Answer 2

Explanation:

given , P1 = 250 W ,

P2 = 1200W ,

t1 = 1h = 3600s ,

t2 = 10 min = 600 seconds

: energy ,

Q1= P1×t1= 250 ×3600 = 900000J = 900 kJ

and Q2 = P2t2 = 1200 × 600 =720000J = 720 kJ

thus, TV set uses more energy ..《《《》》》》