Advertisements
Advertisements
प्रश्न
When a current I flows through a resistance R for time t, the electrical energy spent is given by ______.
विकल्प
IRt
I2Rt
IR2t
I2R/t
Advertisements
उत्तर
When a current I flows through a resistance R for time t, the electrical energy spent is given by I2Rt.
Note: Electrical energy (W) = I²Rt = VIt = `("V"^2"t")/"R"`
APPEARS IN
संबंधित प्रश्न
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.
Write an expression for the electrical energy spent in flow of current through an electrical appliance in terms of current, resistance and time.
What is consumed while using different electrical appliances, for which electricity bills are paid?
An electric toaster draws current 8 A in a circuit with source of voltage 220 V. It is used for 2 h. Find the cost of operating the toaster if the cost of electrical energy is ₹ 4.50 per kWh.
Find out the energy conversion that takes place in the following.
Electric fan : ________
What are the different forms of energy?
Electric eel is a ______.
Name the particles of atom?
What is electric energy?
What are the different ways electricity can be generated?
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
Units of electrical energy are ______
Name the physical quantity which is measured in kWh.
