Respuesta :
Expense of running an electric appliance for 2 hours is 1.32 $.
Explanation:
Power is defined as the energy consumed or converted or heat transferred per unit time. Its actually equationally described as energy divided by the time.
In the question, the appliance is consuming electricity at 110 volts and 30 amps.
So the power consumed in 1 hour = [tex]110 \times 30[/tex] = 3300 watts.
So the energy consumed in 2 hours = [tex]3300 watts \times 2 hours[/tex] = 6600 watt hours. =6.6 kilowatt hours.
So expense at the rate of 0.2 $ per hour = [tex]6.6 \times 0.2[/tex] $ = 1.32 $.
The cost of running the 100V appliance at 30A for 2 hours is 1.32 $.
Power:
Electrical Power is defined as the energy consumed by an electrical appliance per unit time. Mathematically, the power is also represented by the product of voltage drop and current.
P=VI
where P is the power, V is the voltage drop and I is the currenrt
Now the energy consumed is given by:
E=Pt
where t is the time
So the energy consumed in 2 hours = 100×30×2 wh = 6600 wh
E = 6.6 kwh
So expense at the rate of 0.2 $ per hour = 6.6×0.2 $ = 1.32 $.
Learn more about electrical power:
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