Answer to Question #100256 in Electric Circuits for Hope James

Question

Determine between 60 watt bulb and a 100 watt bulb which one is more powerful give reason

Answer 1

The bulb of 100 watt is more powerful because it has more power. Power is the characteristics that describes how quick a job (work) can be done, because 1 watt equals 1 joule per second, or

$$P=\frac{W}{t}.$$

Thus, the first lamp can turn only 60 joules into heat and light within a second while the second bulb turns 100 joules into heat and light in 1 second.