Magnetic Effects of Current and MagnetismBiot  Savart Law (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 9  11 of 11
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Question number: 9
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Question
A circular coil of 0.2 m diameter has 1000 turns and carries a current of 0.1 ampere. The intensity of magnetic field at the center of the coil is
Choices
Choice (4)  Response  

a.  62.8 x 10 ^{4 } N/A∙m 

b.  6.28 x l0 ^{4} N/A∙m 

c.  62.8 x 10 ^{5} N/A∙m 

d.  6.28 x 10 ^{5} N/A∙m 

Question number: 10
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Question
A circular arc of wire of radius of curvature r subtends an angle of radian at its center. If current i is flowing in it then the magnetic induction at its center is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  0 

Question number: 11
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Question
A current i is flowing in a conductor PQRST shaped as shown in the figure. The radius of curved part QRS is r and length of straight portions PQ and ST is very large. The magnetic field at the center O of the curved part is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

