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Calculate the energy consumed by the bulb in one day.

Physics

ScanSolve AI Answer

Answer

D

Step-by-step solution

3 steps
  1. Calculate the energy consumed by the bulb in one day.

    The power of the bulb is P=200 WP = 200 \text{ W}.
    The time it is lighted for is t=1 day=24 hourst = 1 \text{ day} = 24 \text{ hours}.
    The energy consumed is given by the formula E=P×tE = P \times t.

    E=200 W×24 hE = 200 \text{ W} \times 24 \text{ h} E=4800 WhE = 4800 \text{ Wh}
  2. Convert the energy from Watt-hours (Wh) to kilowatt-hours (kWh).

    Since 1 kWh=1000 Wh1 \text{ kWh} = 1000 \text{ Wh}, we divide the energy in Wh by 1000.

    E=4800 Wh1000 Wh/kWhE = \frac{4800 \text{ Wh}}{1000 \text{ Wh/kWh}} E=4.8 kWhE = 4.8 \text{ kWh}
  3. Calculate the total cost.

    The cost of electricity is N 40 per kWh.
    The total cost is the energy consumed (in kWh) multiplied by the rate per kWh.

    Cost=E×Rate\text{Cost} = E \times \text{Rate} Cost=4.8 kWh×N 40/kWh\text{Cost} = 4.8 \text{ kWh} \times \text{N } 40/\text{kWh} Cost=N 192.00\text{Cost} = \text{N } 192.00

    The correct option is D.

    The final answer is N 192.00\boxed{\text{N } 192.00}.

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