Question

An electric meter shows that a household consumes 500 in a month. How much is the energy in joules? ​

Answer 1

Correct Question :

An electric meter shows that a household consumes 500 units in a month. How much is the energy in joules?

Answer :

• Energy is joules is 1800 × 10⁶J or 18 × 10⁸J

Step-by-step explanation :

To Find :-

• How much is the energy in joules?

Solution :-

Given that,

• An electric-meter shows that a household consumes 500 units in a month.

As we know that,

1 unit = 1 kilowatt-hour ( kWh ), 1 kWh = 3.6×10⁶ joules and kilowatt-hour is used in our house-old electric meters.

Therefore, According the question,

=> 1 kWh = 3.6 × 10⁶, So,

=> 500 kWh = 500 × 3.6 × 10⁶

=> 500 × 3.6 × 10⁶

=> 1800.0 × 10⁶

=> 1800 × 10⁶ or 18 × 10⁸

Hence,

Energy in joules = 1800 × 10⁶ J or 18 × 10⁸ J

Remember :-

• 1 unit = 1 kilowatt-hour ( kWh )
• 1 kWh = 3.6×10⁶ joules
• On house-old electric meters, kilowatt-hour.
• 1 kWh = 1 kilowatt × 1 hour.