Question 41 : Which, among the following, have positive susceptibility?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Both paramagnetic and ferromagnetic
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Question 42 : Which, among the following, have negative susceptibility?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Not a magnetic substance
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Question 43 : A substance whose permeability is less than the permeability of free space is?
1. Diamagnetic
2. Paramagnetic
3. Ferromagnetic
4. Not a magnetic substance
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Question 44 : Permeability of free space is also known as _________
1. Magnetic constant
2. Electric constant
3. Electrostatic constant
4. Magnetostatic constant
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Question 45 : The relation between the direction of current and the direction of magnetic field is?
1. Same direction
2. Opposite direction
3. Perpendicular
4. Unrelated
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Question 46 : When an electric current flows out of the page, what is the direction of the magnetic field?
1. Clockwise
2. Anti-clockwise
3. Cannot be determined
4. Parallel to the current
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Question 47 : When an electric current flows into the page, what is the direction of the magnetic field?
1. Clockwise
2. Anti-clockwise
3. Cannot be determined
4. Parallel to the current
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Question 48 : When a bar magnet is broken into two pieces, which of the following are true?
1. The magnet loses its magnetism
2. The magnet has only north pole left
3. The magnet has only south pole left
4. The magnet turns into two new bar magnets
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Question 49 : Unit of MMF is ______________
1. A/m
2. A-m
3. A
4. unitless
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Question 50 : Magnetomotive force is equal to__________________
1. current * number of turns
2. current / number of turns
3. current / number of turns per unit length
4. current * number of turns per unit length
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