Magnetism Exe-10B Very Short Ans Concise Physics ICSE Class 9 Selina Publishers Solutions. This article is the answer of Very Short Questions Type Exe-10B Electromagnet and its Uses. Visit official Website CISCE for detail information about ICSE Board Class-9 Physics.
Magnetism Exe-10B Very Short Ans Concise Physics ICSE Class 9 Selina Publishers
| Board | ICSE |
| Class | 9 |
| Subject | Physics |
| Writer / Publication | Concise selina Publishers |
| Chapter-10 | Magnetism |
| Exe-10B | Electromagnet and its Uses |
| Topics | Solution of Exe-10B Very Short Answer |
| Academic Session | 2024-2025 |
Electromagnet and its Uses
Magnetism Exe-10B Very Short Ans Concise Physics ICSE Class 9 Selina Publishers Solutions
VERY SHORT ANSWER TYPE:
Question-1: Is an electro magnet used as a permanent magnet?
Answer- Electromagnets behave as a magnet only when electric current flows through them. So, they are temporary magnets.
Question-2: Name the material used for preparing an electro magnet.
Answer- The material used for preparing an electromagnet is soft iron.
Question-3: A coil of insulated copper wire is wound around a piece of soft iron and current is passed in the coil from a battery. What name is given to the device so obtained? Give one use of the device mentioned by you.
Answer-Electromagnet, electric relay.
Question-4: Name one device that uses an electromagnet.
Answer-Electric bell.
Question-5: Why is soft iron used as the core of the electro magnet in an electric bell?
Answer-The soft iron bar acquires the magnetic properties only when an electric current flows through the solenoid and loses the magnetic properties as soon as the current is switched off. That’s why soft iron is used as the core of the electromagnet in an electric bell.
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