Write down the difference between dynamo and electric motor. What is earthing?
WBBSE
Class X
Physical Science
Current Electricity
03 Mark
2024
Difference between Dynamo and Electric Motor:
| Feature | Dynamo | Electric Motor |
|---|---|---|
| Function | Converts mechanical energy into electrical energy (generator). | Converts electrical energy into mechanical energy. |
| Operation | Works on the principle of electromagnetic induction (Faraday’s law). | Works on the principle of Lorentz force (interaction of magnetic field and current). |
Earthing is the process of connecting the electrical circuit or equipment to the ground (earth). It provides a safe path for the current to flow into the earth in case of a fault, reducing the risk of electrical shock and preventing damage to electrical devices.
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