Advertisements
Advertisements
Question
What is consumed while using different electrical appliances, for which electricity bills are paid?
Advertisements
Solution
Electrical energy in kWh which is commercially called a unit of electrical energy.
1 kWh = 1 kW × 1 hr = 1 unit of electricity.
APPEARS IN
RELATED QUESTIONS
A bulb is connected to a battery of p.d 4 V and internal resistance 2.5 Ω. A steady current of 0.5 A flows through the circuit. Calculate:
- the total energy supplied by the battery in 10 minutes
- the resistance of the bulb and
- the energy dissipated in the bulb in 10 minutes.
How do kilowatt and kilowatt-hour differ?
List the names of three electrical gadgets used in your house. Write their power, voltage rating and approximate time for which each one is used in a day. Hence find the electrical energy consumed by each in a month of 30 days.
Find out the energy conversion that take place in the following.
Electric Iron box : _______ _______
Find out the energy conversion that takes place in the following.
Electric fan : ________
Find out the energy conversion that takes place in the following.
Speaker ______.
What are the different forms of energy?
Electric eel is a ______.
Electric eel can generate ______.
Name the particles of atom?
What is electric energy?
Write the uses of Electric energy.
Choose the odd one:
The ground state energy of a hydrogen atom is - 13.6 eV When its electron is in the first excited state, its excitation energy is
Name the physical quantity which is measured in Wh.
A bulb of power 60 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
