Advertisements
Advertisements
Question
If an appliance of power P watt is used for time t hour. How much electrical energy is consumed in kWh?
Solution
Power P = `w/t`= Electrical energy / t
.’. Electrical energy = P × t
APPEARS IN
RELATED QUESTIONS
One kilowatt hour is equal to ............ joule.
One kilowatt is equal to
From where does the electricity come to our home ?
State the purpose of kWh meter.
What is an electric fuse? State its purpose in the household electrical circuit.
Figure shows two ways of connecting the three bulbs A, B and C to a battery. Name the two arrangements. Which of them do you prefer to use in a household circuit? Give a reason to support your answer.
In a premise 5 bulbs each of 100 W, 2 fans each of 60 W, 2 A.Cs each of 1.5 kW is used for 5 h per day. Find:
- Total power consumed per day,
- Total power consumed in 30 days,
- Total electrical energy consumed in 30 days.
- The cost of electricity at the rate of ₹ 6.25 per unit.
What is the voltage of the electricity that is generally supplied to a house?
An electrical appliance is rated as 60 W – 150 V.
How much current will flow through the appliance when in use?
Our body can pass electricity through it.
