## Magnetic Effect Of Current And Magnetism Quiz-6

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background.

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q51. A dip circle is at right angles to the magnetic meridian.
•
•  90°
•  45°
•  4 : 1
Solution
Where the dip is at right angles to magnetic meridian, vertical component of earth’s magnetic field is effective. The dip needle stands vertical. Therefore, apparent dip=90° .

Q52.
•

•

•

•

Solution

Q53.  When a metallic plate swings between the poles of a magnet
•   No effect on the plate
•  Eddy currents are set inside the plate and the direction of the current is along the motion of the plate
•  Eddy currents are set up inside the plate and the direction of the current oppose the motion of the plate
•  Eddy currents are set up inside the plate
Solution
When a changing magnetic flux is applied to a bulk piece of conducting material then circulating current is called eddy currents are induced in material.

Q54. Susceptibility of Mg at 300 K is 1.2×10-5. The temperature at which susceptibility will be 1.8×10-5 is
•  400 K
•  200 K
•  370 K
•  None of these
Solution

Q55.The magnetic susceptibility of paramagnetic materials is
•  Positive, but very high
•  Negative, but very small
•  Negative, but very high
•  Positive, but small
Solution

Q56. Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)?
•  Permeability
• Retentivity
•  Heat energy lost per unit volume in the sample
•  Susceptibility
Solution
Area enclosed by B-H curve represents energy lost. If the area of hysteresis loop is less energy loss is low whereas if the area of hysteresis loop is large energy loss is high.

Q57.A straight wire carrying current i is turned into a circular loop. If the magnitude of magnetic moment associated with it in M.K.S. unit is M, the length of wire will be
•  4Ï€iM
•  √(4Ï€M/i)
•  √(4Ï€i/M)
•  MÏ€/4i
Solution

Q58.A magnet performs 10 oscillations per minute in a horizontal plane at a place where the angle o dip is 45° and the total intensity is 0.707 units. The number of oscillations per minute at a place where dip angle is 60° and total intensity is 0.5 CGS units will be
•  5
•  7
•  9
•  11
Solution

Q59.The relative permeability of a substance X is slightly less than unity and that of substance Y is slightly more than unity, then
•  X is paramagnetic and Y is ferromagnetic
•  X is diamagnetic and Y is ferromagnetic
•  X and Y both are paramagnetic
•  X is diamagnetic and Y is paramagnetic
Solution

Q60. A bar magnet of magnetic moment 3.0 A-m2 is placed in a uniform magnetic induction field of 2×10-5 T. If each pole of the magnet experiences a force of 6×10-4 N, the length of the magnet is
•  0.5 m
•  0.3 m
• 0.2 m
•  0.1 m
Solution

#### Written by: AUTHORNAME

AUTHORDESCRIPTION

## Want to know more

Please fill in the details below:

## Latest NEET Articles\$type=three\$c=3\$author=hide\$comment=hide\$rm=hide\$date=hide\$snippet=hide

Name

ltr
item
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET & IIT JEE COACHING: Magnetic-Effect-Of-Current-And-Magnetism-Quiz-6
Magnetic-Effect-Of-Current-And-Magnetism-Quiz-6