Q5. "In our daily life we use many devices where electrical energy is converted into
heat energy ".Name two electrical devices which justify the above statement. (2)
Answers
Answer:
Answer
The devices in which electricity is converted into heat Electric heater and electric iron.
Answer:
What do you think will happen if an electrical rod is placed in a beaker of water? After a while, the water will heat up. Electrical energy is converted into heat energy. But how? The rod has a voltage running through it and generates current in its wire. Electrons while collide with the atoms in the wire, transfer energy from the moving electrons to the metal lattice in the wire. The atoms of this metal lattice vibrate due to the extra gain of this energy. And they vibrate more and more as they gain energy and heat energy is produced.
#What is conversion of electrical energy to heat energy?
As the name suggest, conversion of electrical energy to heat energy is nothing but converting one form of energy to another form.
If a device has an input as electrical energy and it gives output as heat then this where is conversion takes place.
#Example 1: for electrical energy to heat energy conversion:
The energy conversion can be easily explained with a simple example. You can even try it in your home. Just take an electrical bulb and plug its socket. Now turn on the light for 5 -10 min. Now turn off the light and touch the electric bulb, you can feel the heat in the electrical bulb. It’s because electrical energy is converted into heat energy and light energy in electric bulb.
#Example 2: for electrical energy to heat energy conversion:
Now just take a coil heater. Take a bucket full of cold water and you can even check its temperature using thermometer. Now plug the coil heater socket for 10 min. Now unplug the socket and check the temperature of water in the bucket. You can see the raise of temperature in the thermometer. The question is how the temperature increases?? It’s because of the electrical energy conversion to heat energy.
#How electrical energy is converted to heat energy
Electric heating is any process in which electrical energy is converted to heat. Common applications include space heating, cooking, water heating and industrial processes.
An electric heater is an electrical appliance that converts electrical energy into heat. The heating element inside every electric heater is simply an electrical resistor, and works on the principle of Joule heating: an electric current through a resistor converts electrical energy into heat energy. Most modern electric heating devices use nichrome wire as the active element. The heating element depicted on the right uses nichrome wire supported by heat resistant, refractory, electrically insulating ceramic.
#Some of the examples for the conversion of electric energy to heat energy are
Radiative heaters
Convection heaters
Fan heaters
Lighting system
Heat pumps
Microwave oven
#Points to Remember
An energy conversion occurs if energy changes from one form to another
If a device has an input as electrical energy and it gives output as heat then this where is conversion takes place.
Electric bulb is one of the example for electrical energy to heat energy conversion
#Other types of Electric energy
Electric energy
Electric potential energy
Define Electric Energy
Definition of electric energy
General electric energy
Example of electric energy
Electric energy generation
Electric energy formula
What is hydro electric energy
Electric energy sources
Hydro electric energy
Electric energy equation
Electrical energy to heat energy
Information about electrical energy
Potential electric energy
Images of electrical energy
How is electrical energy used
Electric energy density
Electrical energy conversion
Electric Energy Consumption
Picture of electrical energy