A television uses a current of 1.5A at 120V. The television is used 2 hours. Calculate the power used in KW and the energy used in kWh.
power=V*I
to get KW, divide by 1000
energy=V*I*time in hours.
To calculate the power used in kilowatts (KW), we can use the formula:
Power (KW) = (Current (A) * Voltage (V)) / 1000
Given that the current is 1.5A and the voltage is 120V, we can substitute these values into the formula:
Power (KW) = (1.5A * 120V) / 1000
Simplifying, we get:
Power (KW) = 0.18 KW
Therefore, the power used by the television is 0.18 kilowatts.
To calculate the energy used in kilowatt-hours (kWh), we can use the following formula:
Energy (kWh) = Power (KW) * Time (hours)
Given that the power used is 0.18 KW and the television is used for 2 hours, we can substitute these values into the formula:
Energy (kWh) = 0.18 KW * 2 hours
Simplifying, we get:
Energy (kWh) = 0.36 kWh
Therefore, the energy used by the television is 0.36 kilowatt-hours.