Advertisements
Advertisements
प्रश्न
Name any two appliances which work under the principle of heating effect of current.
उत्तर
The principle of all electric heating appliances like iron box, water heater, toaster etc. work under the principle of heating effect of current.
APPEARS IN
संबंधित प्रश्न
Explain why, the current that makes the heater element very hot, only slightly warms the connecting wires leading to the heater.
Give Scientific reason.
In practice, the unit kWh is used for the measurement of electrical energy, rather than joule.
Name any six domestic appliances based on the heating effect of electric current.
Answer the following question.
Write the mathematical expression for Joule's law of heating.
Define fuse.
The heating element of an electric iron is made up of:
Copper wire offers very little ______ and does not get heated up quickly.
A fuse is used in an electric circuit to stop high currents flowing through the circuit.
The electric fuse works on the Joule heating principle.
Tara, after completing her exams, went to her grandmother's house along with her younger brother Rahul. One day, Rahul came home after playing and switched on the fan and air conditioner. At the same time, his grandmother was preparing a milkshake for him using a mixer. Suddenly, they heard a big sound and the electricity of the house got shut down. Tara is called an electrician. He said the main reason for supply to shut down was overloading.
- What is overloading?
- Is overloading and short the same? When does short-circuiting take place?
- How can the effects of overloading be avoided?
