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Unformatted text preview: Answer: 1 Question 7 Question: Electromagnetic induction is the 1 . charging of a body with a positive charge 2 . production of current by relative motion between a magnet and a coil 3 . rotation of the coil of an electric motor 4 . generation of magnetic field due to a current carrying solenoid Answer: 2 Question 8 Question: For making a strong electromagnet, the material of the core should be 1 . soft iron 2 . steel 3 . brass 4 . copper Answer: 1 Question 9 Question: You have a coil and a bar magnet. You can produce an electric current by 1 . moving the magnet but not the coil 2 . moving the coil but not the magnet 3 . moving either the magnet or the coil 4 . using another DC source Answer: 3 Question 10 Question: A fuse in an electric circuit acts as a 1 . current multiplication 2 . voltage multiplication 3 . power multiplier 4 . safety device Answer: 4...
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- Spring '11
- Magnetic Field, Faraday, Usama Farooq