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Question
Fill in the following blanks with suitable words :
(a) The lines of .........round a straight current-carrying conductor are in the shape of ...........
(b) For a current-carrying solenoid, the magnetic field is like that of a ...........
(c) The magnetic effect of a coil can be increased by increasing the number of ...........,increasing the .............or inserting an ............ core.
(d) If a coil is viewed from one end and the current flows in an anticlockwise direction, then this end is a ........... pole.
(e) If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a ........pole.
Fill in the following blanks with suitable words :
(a) The lines of .........round a straight current-carrying conductor are in the shape of ...........
(b) For a current-carrying solenoid, the magnetic field is like that of a ...........
(c) The magnetic effect of a coil can be increased by increasing the number of ...........,increasing the .............or inserting an ............ core.
(d) If a coil is viewed from one end and the current flows in an anticlockwise direction, then this end is a ........... pole.
(e) If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a ........pole.
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Solution
(a) magnetic field, concentric circles
(b) bar magnet
(c) turns, current, iron
(d) north
(b) south
(a) magnetic field, concentric circles
(b) bar magnet
(c) turns, current, iron
(d) north
(b) south
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