FROBLEMS L. Which of the following is or are correct? A. Like poles of a magnet
ID: 2032693 • Letter: F
Question
FROBLEMS L. Which of the following is or are correct? A. Like poles of a magnet repel each other. B. Unlike poles of a magnet attract each other. c. For one orientation of a bar magnet. in the plane of this paper, there are neutral points. (1) AB, (2) None of the above. (3) ABC. (4) C. (S) Bc. I. 2. Which of the following is or are correct? A. An iron shield placed around a piece of equipment can protect it trom stray mag netic fields. B. Copper makes a good shield for magnetic lines of force. C. A bar magnet # ust be properly aligned before any neutral points can be discov- ered. (i) ABC, (3) (4) (5) (2) A. B. c. AC. 3. A magnet 20 em long is aligned so that the nearest neutral point is found, along the from the south pole of the magnet. the longitudinal axis of the magnet. 30 cm borizontal component of the earth's imagnetic field is 2.5 x 10-5 web/m2, then what is the strength of each magnecic pole, tn webers? (1) 1.85 x 10-6. C2) 4.2 x 10-®, (3) 3.5 x 10-. (4) 2.5 x 10- (5) 2.95 x 4. A neutral point is located on the perpendicular bisector to a magnet 40 cm from each pole. The magnet is 20 em long and the earth's magnetic field is 2.5 x 10- web/m2. What is the strength of each magnetic pole, in webers? (1) 3.3x10-5? (2) 1.6×10-5, (3) 1.2 x 10-s, (4) 4x10-6 (5) 8×10-6 5. A magnet 20 cm long with a pole strength of 1.95 x 10-6 webers is aligned so that neutral points are found on the perpendicular bisector to the magnet. Assuming the strength of the earth's field to be 2.5 x 10-s web/m2, determine the shortest distance, in meters, from a neutral point to the north pole of the magnet. (1) 0.62. (2) 0.25, (3) 0.18, (4) 0.34. (S) 0.So.Explanation / Answer
Q1
In a magnet like pole repel and unlike pole attract.
For bar magnet there are 2 neutral point in one orientation
So Answer is 1
AB
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