Question

5) An electric bulb is marked 250 watt and 230 volt
a) How many joule energy does it consume in 1 hour
b) What is the resistance of this device​

Answer 1

Answer:

ANSWER

Energy (power×time) is measured in Joules and by including time (t) in the power formulae, the energy dissipated by a component or circuit can be calculated.

Energy dissipated Q= Pt.

In the question, the time taken is given as 1 hour = 60 minutes, that is 60×60=3600seconds and the power is 250 W.

Hence, the energy consumed by the bulb is 250W×3600s=9.00,000J.Thatis,9×10

5

Joules.

Answer 2

Explanation:

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