## Electromagnetic Induction Quiz-5

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.

Q41. The direction of induced e.m.f. during electromagnetic induction is given by
•  Lenz’s law
•  Maxwell’s law
•  Ampere’s law
Solution
Lenz’s law

Q42.The self inductance of a coil is 5 henry, a current of 1 amp change to 2 amp within 5 second through the coil. The value of induced e.m.f. will be
•  10 volt
•  0.10 volt
•  1.0 volt
•  100 volt
Solution

Q43.  An infinitely cylinder is kept parallel to an uniform magnetic field B directed along positive z axis. This direction of induced current as seen from the z axis will be
•   Clockwise of the +ve z axis
•  Anticlockwise +ve z axis
•  Zero
•  Along the magnetic field
Solution
In uniform magnetic field, change in magnetic flux is zero. Therefore, induced current will be zero.

Q44. Pure inductance of 3.0 H is connected as shown below. The equivalent inductance of the circuit is
•  1 H
•  2 H
•  3 H
•  9 H
Solution

Q45.A coil of 100 turns and area 5 square centimeter is placed in a magnetic field B = 0.2 T. The normal to the plane of the coil makes an angle of 60° with the direction of the magnetic field. The magnetic flux linked with the coil is
•  5×103 Wb
•  5×10-5 Wb
•  10-2 Wb
•  10-4 Wb
Solution

Q46. In an LR-circuit time constant is that time in which current grows from zero to the value (where I0 is the steady state current)
•  0.63 I0
•  0.50 I0
• 0.37 I0
•  I0
Solution

Q47.The coil of dynamo is rotating in a magnetic field. The developed induced e.m.f. changes and the number of magnetic lines of force also changes. Which of the following conditions is correct
•  Lines of force minimum but induced e.m.f. is zero
•  Lines of force maximum but induced e.m.f. is zero
•  Lines of force maximum but induced e.m.f. is not zero
•  Lines of force maximum but induced e.m.f. is also maximum
Solution

Q48.An AC generator of 220 V having internal resistance r=10 Î© and external resistance R=100 Î©. What is the power developed in the external circuit
•  484 W
•  400 W
•  441 W
•  369 W
Solution

Q49.A conducting wire is moving towards right in a magnetic field B. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be
•  In the plane of paper pointing towards right
•  In the plane of paper pointing towards left
•  Perpendicular to the plane of paper and down-wards
•  Perpendicular to the plane of paper and upwards
Solution
According to Fleming’s right hand rule, the direction of B will be perpendicular to the plane of paper and act downward

Q50. A square loop of wire, side length 10 cm is placed at angle of 45° with a magnetic field that changes uniformly from 0.1 T to zero in 0.7 s. The induced current in the loop (its resistance is 1 Î©)is
•  1.0 mA
•  2.5 mA
•  3.5 mA
• 4.0 mA
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: Electromagnetic-Induction-Quiz-5
Electromagnetic-Induction-Quiz-5