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A 60 W light bulb at 120 V is left on in your house to prevent burglary, and the power charges 10 cents per kilowatt-hour, how much will it cost to leave the bulb on for 30 days?

Sagot :

Snehashish65idn

4.22 dollars is the cost to leave the bulb on for 30 days.

What is electrical energy?

Electrical energy is the power an atom's charged particles have to cause an action or move an object. The movement of electrons from one atom to another is what results in electrical energy.

There is a dissipation of electrical energy in the resistor when an electric current flows through it. It depends on the resistance of the resistor and the applied voltage.

The expression of the power dissipation is as follows ;

P=[tex]\frac{V^2}{R}[/tex]

V is the applied voltage.

R is the resistance.

Given

P  = 60 W

30days * 24h/day = 720 Hours kW * h

Therefore by putting the values in the given formula,

= (60/1000)kW * 720h

= 43.2 kWh

Hence,

The cost is  42.2 kWh42.2 kWh x 0.1

= 4.22 dollars

Learn more about electrical energy here:

https://brainly.com/question/1580875

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