Advertisements
Advertisements
प्रश्न
What is the heating effect of electric current?
Advertisements
उत्तर
When electricity is applied to a conductor that is solely resistive, all of the energy from the electric current is converted to heat. Resistor heats up as a result. Electric current's heating impact is defined as the heating of a resistor as a result of electrical energy loss.
APPEARS IN
संबंधित प्रश्न
An electric iron of resistance 20 Ω takes a current of 5 A. Calculate the heat developed in 30 s.
An electric heater is connected to the 230 V mains supply. A current of 8 A flows through the heater.
(b) How much energy is transferred to the heater each second?
Write down the formula for the heat produced when a current I is passed through a resistor R for time t.
Give Scientific reason
In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster etc, an alloy such as Nichrome is used, not pure metals.
Write two devices based on the heating effect of electric current.
What does overloading cause?
An electric component used as a safety device is electric circuit is ______.
A student boils water in an electric kettle for 20 minutes. Using the same mains supply he wants to reduce the boiling time of water. To do so should he increase or decrease the length of the heating element? Justify your answer.
The electric fuse works on the Joule heating principle.
An electric kettle consumes 1 kW of electric power when operated at 220 V. A fuse wire of what rating must be used for it?
