Magnetism and Electromagnetism Online Test – Multiple Choice Questions and Answers

1. The unit of flux density is known as

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2. If positively charged particles enter with high velocity from the sky towards the earth, then the earths magnetic field will deflect them towards

 
 
 
 

3. The energy resides in a current carrying conductor in the form of

 
 
 
 

4. A Hall effect sensor

 
 
 
 

5. The direction of induced current is given by?

 
 
 
 

6. What is the reluctance of a material that has a length of 0.045 m, a cross-sectional area of 0.015 m2 , and a permeability of 2500 µWb/At·m?

 
 
 
 

7. Permeability is the inverse equivalent of which electrical term?

 
 
 
 

8. How much flux is there in a magnetic field when its flux density is 5000 mu.gifT and its cross-sectional area is 300 mm²?

 
 
 
 

9. The motional e.m.f. induced in a coil is independent of

 
 
 
 

10. What is the magnetomotive force in a 150-turn coil of wire with 2 A flowing through it?

 
 
 
 

Question 1 of 10

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