State the energy changes in the following cases while in use : Electric bell, Microphone, Electric bulb, Photoelectric cell and geyser.
Answers
Answer:
1. Electric bell
➺ Electrical Energy into Sound Energy.
2. Microphone
➺ Sound Energy into Electrical Energy.
3. Electric bulb
➺ Electrical Energy into Heat and Light Energy.
4. Photoelectric cell
➺ Light Energy into Electrical Energy.
5. Geyser
➺ Electrical Energy into Heat Energy.
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Answer:
heya✌
a. electric bell
Inside the batteries the chemicals react together to produce electricity. This electrical energy is then changed to moving (kinetic) energy by passing it through something called an electromagnet, which makes the bell clapper move. The clapper then hits a bell to produce sound energy.
b.microphone
Microphones are a type of transducer - a device which converts energy from one form to another. Microphones convert acoustical energy (sound waves) into electrical energy (the audio signal). Different types of microphone have different ways of converting energy but they all share one thing in common: The diaphragm.
c.electric bell
It can only change its form. In the case of an electric bulb, the electrical energy is converted to light and heat. The amount of electrical energy put into a bulb = the amount of light energy (desirable form) plus the heat energy that comes out of the bulb (undesirable form).
d.photoelectric cell
In a photoelectric cell, optical energy is being transformed into electrical energy because light photons are being absorbed and photoelectric current is being produced.
e.geyser
It has an element inside that heats the water up to a set temperature. When a hot tap is turned on, hot water is released from the geyser and cold water rushes in to replace it. As the water temperature in the geyser has now decreased, the element kicks in to heat the water back up to the set temperature.