1) The magnetic iron oxide , one of the ..........., is a natural magnet. a) materials b) minerals c) magnetism 2) The............... electric charge and the magnetic field effect each other a) moving b) stationary c) standing 3) The magnetic iron oxide is a ............ magnet. a) man-made b) artifical c) natural 4) The magnet used in devices such as .......... are man-made magnets or artificial magnets. a) telephone b) electric cooker c) electric iron 5) A bar magnet has ............ poles. a) one b) two c) three 6) The poles of a magnet have a .................. power of attraction than its central portion. a) equal b) greater c) smaller 7) Which ......... has smaller power of attraction in bar magnet ? a) central portion b) north pole c) south pole 8) The magnetic lines of force leave the............ pole and enter the.......... pole a) south north b) north south 9) The magnetic effect of an electric current was discovered by............... in 1820. a) Ohm b) Oersted c) Coulomb 10) There is a................ around every wire carrying an electric current. a) force b) electric field c) magnetic field 11) The ............ of the magnetic field due to the current flowing through the wire can be found by using the right-hand rule. a) direction b) effect c) force 12) The direction of .............. will give the direction of the magnetic field in Right Hand Rule a) finger b) thumb 13) The.............pole/s of a compass needle indicates the direction of the magnetic field. a) south b) north c) both 14) The direction of thumb will give the direction of the .............. a) current b) magnetic field

Electromagnetism

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