Magnetic Effects of Current and MagnetismBiot  Savart Law (KVPY Stream SBSX (Class 12 & 1st Year BSC) Physics): Questions 4  6 of 6
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Question number: 4
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Appeared in Year: 2015
Question
A wire bent in the shape of a regular n polygonal loop carries a steady current I. Let I be the perpendicular distance of a given segment and R be the distance of given segment and R be the distance of a vertex both from the centre of the loop. The magnitude of the magnetic field at the centre of the loop is given by.
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Choice (4)  Response  

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d. 


Question number: 5
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Appeared in Year: 2015
Question
A point charge Q rotates uniformly in a vertical circle of radius R = 1 mm. The axis of the circle is aligned along the magnetic axis of the earth. At what value of the angular speed ω, the effective magnetic field at the centre of the circle will be reduced to zero? (Horizontal component of Earth’s magnetic field is 30 micro Tesla)
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Choice (4)  Response  

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Question number: 6
» Magnetic Effects of Current and Magnetism » Biot  Savart Law
Question
The magnetic field produced at the centre of a coil of radius R carrying a current is . The magnitude of magnetic field at a point lying on the axis of the coil at a distance from the centre of the coil is –
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Choice (4)  Response  

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b. 


c. 


d. 

