Question

You leave a light on in your house for 10 minutes (600 seconds). The lightbulb draws 0.5 amps at 120 volts. What is the power rating of the lightbulb and how much energy is consumed in the 10 minutes? A) 60 watts and 0.1 joules B) 60 watts and 36,000 joules C) 240 watts and 0.4 joules D) 2400 watts and 144,00 joules

Answer 1

Answer:

B) 60 watts and 36,000 joules

Explanation:

As we know that electrical power consumed by the light bulb is given as

$Power = V \times i$

now we have

$V = 120 Volts$

$i = 0.5 A$

now we will have

$P = 120\times 0.5$

$P = 60 Watt$

now energy consumed by the bulb is given as

$Energy = P\times t$

$E = 60 \times 10\times 60$

$E = 36,000 J$

so correct answer will be

B) 60 watts and 36,000 joules