How much energy is consumed by a 12V light left on for 13 hours at a current of 1.5A?

How much energy is consumed by a 12V light left on for 13 hours at a current of 1.5A?

• A. 0.112 kWh
• B. 0.234 kWh
• C. 0.325 kWh
• D. 0.156 kWh

Answer: (B)

To determine how much energy is consumed by the light, you can use the formula for electrical energy: \[ \text{Energy (kWh)} = \frac{\text{Voltage (V)} \times \text{Current (A)} \times \text{Time (h)}}{1000} \] Given that the voltage is 12V, the current is 1.5A, and the time is 13 hours, you can plug these values into the formula: 1. Calculate the power in watts: \[ \text{Power (W)} = \text{Voltage} \times \text{Current} = 12V \times 1.5A = 18W \] 2. Convert the power from watts to kilowatts: \[ \text{Power (kW)} = \frac{18W}{1000} = 0.018 kW \] 3. Then, calculate the total energy consumed: \[ \text{Energy (kWh)} = \text{Power (kW)} \times \text{Time (h)} = 0.018 kW \times 13h = 0.234 kWh \] This calculation

To determine how much energy is consumed by the light, you can use the formula for electrical energy:

[ \text{Energy (kWh)} = \frac{\text{Voltage (V)} \times \text{Current (A)} \times \text{Time (h)}}{1000} ]

Given that the voltage is 12V, the current is 1.5A, and the time is 13 hours, you can plug these values into the formula:

1. Calculate the power in watts:

[ \text{Power (W)} = \text{Voltage} \times \text{Current} = 12V \times 1.5A = 18W ]

2. Convert the power from watts to kilowatts:

[ \text{Power (kW)} = \frac{18W}{1000} = 0.018 kW ]

3. Then, calculate the total energy consumed:

[ \text{Energy (kWh)} = \text{Power (kW)} \times \text{Time (h)} = 0.018 kW \times 13h = 0.234 kWh ]

This calculation