MAGNETIC EFFECTS OF ELECTRIC CURRENT 1. Describe how you will locate a current carrying wire concealed in a wall? 2.Describe the construction and working of an electromagnet. Mention the factors on which its strength depends? 3.State qualitatively the effect of inserting an iron core into a current-carrying solenoid? 4.What is an electromagnet?How does it differ from a permanent magnet? 5.Name 2 alloys used for making permanent magnets? 6.State the practical applications of Faraday's electromagnetic induction in everyday life? 7.Name 4 devices which work on magnetic effects of curent? 8.Explain why copper wire cannot be used as a fuse wire? 9.The mains power supply of a house is through a 15A fuse.When a 2000W heater is used in this house,how many 100W bulbs can be used in this house at the correct voltage? 10.Electric supply of a house is through a 15A fuse.When a 2000W heater is used in this house,how many 100W bulbs can be used simultaneously,given that the supply is at 220V and the heater and the bulbs are rated for 220V?
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1. We will move the compass around the concealed wall , if the needle of the compass deflects at a certain location than the wire is located there
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