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Magnetic Effects of Current Test Online MCQs

Test Name Magnetic Effects of Current MCQs Test
Subject Physics
Test Type MCQs
Total Question 15
Total Marks 30
Total Time 15 Mints
Test Help For
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Get information about Magnetic force and its effects on current in Magnetic Effects of Current MCQs Test Online. Attempt all questions to prepare for the engineering colleges & universities and medical colleges & universities admission tests. Magnetic Effects of Current Test Online MCQs being uploaded below.

Magnetic Effects of Current Test Online MCQs

Physics

1. A proton and an α-particle, moving with the same velocity, enter a uniform magnetic field, acting normal to the plane of their motion. The ratio of the radii of the circular paths described by the proton and α-particle is:

 

Question 1 of 15

2. A conducting ring of radius 1 meter is placed in an uniform magnetic field B of 0.01 teals oscillating with frequency 100 Hz with its plane at right angle to B. what will be the induced electric field?

 

Question 2 of 15

3. An electron moving with kinetic energy 6.6 x 10⁻¹⁴ J enters in a magnetic field of 4 x 10⁻³ T at right angles to it. The radius of its circular path will be nearest to:

 

Question 3 of 15

4. The cyclotron frequency of an electrons gyrating in a magnetic field of 1 T is approximately:

 

Question 4 of 15

5. Two identical conductors of copper and aluminum are placed in an identical electric field. What is the magnitude of induced charge in the aluminum?

 

Question 5 of 15

6. A solenoid is 1.5 m long and its inner diameter is 4.0 cm. it has 3 layers of winding of 1000 turns each and carries a current of 2.0 amperes. The magnetic flux for a cross-section of the solenoid is nearly

 

Question 6 of 15

7. According to Lenz’s law there is a conversion of:

 

Question 7 of 15

8. In a coil of self inductance of 5 Henry, the rate of change of current is 2 ampere per second, the e.m.f. induced in the coil is:

 

Question 8 of 15

9. The magnetic flux through a circuit carrying a current of 2.0 A is 0.8 Weber. If the current reduces to 1.5 A in 0.1 s, the induced emf be:

 

Question 9 of 15

10. A 50 turn circular coil has a radius of 3 cm, it is kept in a magnetic field acting normal to the area of the coil. The magnetic field B is increased from 0.10 T in 2 milli second, the average induced emf will be:

 

Question 10 of 15

11. The current flows from A to B as shown in figure, then the direction of the induced current in the loop will be:

 

31

Question 11 of 15

12. A coil of copper having 1000 turns is placed in a magnetic field (B=4 x 10⁻⁵) perpendicular to its axis. The cross sectional area of eh coil is 0.05 m². If it turns through 180° in 0.01 second, then the e.m.f. induced in the coil will be:

 

Question 12 of 15

13. An electron is travelling along the x-direction. It encounters a magnetic field in the y-direction. Its subsequent motion will be:

 

Question 13 of 15

14. The magnetic moment (μ) of a revolving electron around the nucleus varies with principal quantum number n as:

 

Question 14 of 15

15. What is the magnetic field at a distance R from a coil of radius r carrying current I?

 

Question 15 of 15


 

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