Magnetism With Answers

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Magnetism

Sr. # Questions Answers Choice
1 Which of the following material is ferromagnetic Nickel Copper Alluminum Silver
2 When two curreint carrying wires in the same direction are placed parrallel near each other. due to magnetic field produced by each wire they. Repeal each other Stop moving the current through them Attract each other Have no effect on each other
3 Magnetic field lines. Are colosed Are farthest at poles Intersect each other Do not pass in vacuum
4 Asensitive magnetic material is to shielded by theexternal magnetic field. It should be kept inside a box of. Soft Iron Plastic Steel Wood
5 Material which is the best one for making an electromagnet. Steel Soft Iron Cobalt Nickel
6 material which is the best one for making a permanent magnet. Nickel Steel Soft iron Cobalt
7 The cause of the Earth's magnetic field is. Rotational motion of Earth Motion of ions in the core Spinnig of Earth Pull of the sun
8 Earth's magnetic field intensity is. Constant every warre Very low at poles Varies place to place Very high at equator
9 Which one is the quicket method to magnetize a material Strike with hammer Putting inside a current carrying coil Moving into magnetic field Stroking the opposite pole
10 If a bar magnet is cut in half it will become A monopole Magnetized Magnet of less strength The same magnet
11 The best materials to protect a device from external magnetic field is Sot iron Steel wood Plastic
12 A common method used to meagnetics a materials is. Hitting Heating Stroking Placing inside a solenoid having AC current
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