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प्रश्न
Tick the most appropriate answer.
The surest test of magnetism is
पर्याय
attraction
repulsion
diffusion
hammering
उत्तर
repulsion
संबंधित प्रश्न
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
Name four appliances which work using electricity ?
What is a magnet?
Write the answer in your word.
Write the properties of a magnet.
With whom should I pair up?
| Group 'A' | Group 'B' |
| (a) Compass | 1. The highest magnetic force |
| (b) The door of a cupboard | 2. Like poles |
| (c) Repulsion | 3. A magnet |
| (d) Magnetic pole | 4. A magnetic needle |
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Explain the mechanism by which unmagnetized iron nails get attracted to a magnet when brought near it.
What is a neutral point?
With the help of a diagram explain the following:
Magnetisation of an iron bar by a single touch method.
People who made mariner’s compass for the first time.
Artificial magnets are made in different shapes such as ______, _____ and _______.
MRI stands for _______.
List out the uses of magnets.
What are the factors that determine the strength of the magnet?
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 pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
Define natural magnet.
