Question

J
-5
- 1
-21
-9
6
-10
2o
-6
a) Find there numbers from the box whose
sum is Zero.
b) Find three numbers from the box whose
sum is 5.​

Answer 1

Answer:

Answer:

Calculate the electrical energy consumed by a filament lamp of power 100W in 20 minutes.

2000J

12000J

120000J

1000J

The answer to your question is Option C [120000J].

Hey mate after reading your question we come to know one concept tha t is ,

Energy = Power × time .

Here,Energy is product of both the power and time taken .

So,According to Th is concept lets apply it to your question

But one thing that is we should convert time to minutes So,

Time = 20 × 60 = 1200seconds .

Then,Applying it to the formula we get,

Energy = 100W × 12000sec

Energy = 120000J.