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प्रश्न
What is a natural magnet?
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उत्तर
The magnets (pieces of lodestone) found in nature are called a natural magnet.
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संबंधित प्रश्न
You are given a magnet. How will you use it to find north-south direction at a place?
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.
Define the term Poles of a magnet
State three important properties of a magnet.
Explain the following:
Resistance of a conductor
What is meant by electrostatic induction? You have been given two metal containers A and Band a positively charged body X. With the help of a diagram, explain the different stages of charging - A positively, and B negatively.
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
The magnetic poles always exist in pairs.
