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#8 | Field due to Wire in 3D
(Physics) > Moving Charges and Magnetism

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Related Practice Questions :

Which of the following graphs correctly represents the variation of magnetic field induction with distance due to a thin wire carrying current?

1.   2.
3. 4.
 80%
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The magnetic field at center due to the orbital motion of the electron in the hydrogen atom is :

1.  12.5 tesla

2.  5 tesla

3.  24 tesla

4.  1 tesla

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A long solenoid has 800 turns per meter length of the solenoid. A current of 1.6 A flows through it. The magnetic induction at the end of the solenoid on its axis is:

1.  16×10-4 T

2.  8×10-4 T

3.  32×10-4 T

4.  4×10-4 T

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An infinitely long straight conductor is bent into the shape as shown in the figure. It carries a current of \(i\) amperes and the radius of the circular loop is \(r\) metres. What will be the magnetic induction at its centre?
                   
1. \(\frac{\mu_{0}}{4 \pi} \frac{2 i}{r} \left( \pi + 1 \right)\)
2. \(\frac{\mu_{0}}{4 \pi} \frac{2 i}{r} \left(\pi - 1 \right)\)
3. zero
4. Infinite

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A current \(i\) ampere flows in a circular arc of wire whose radius is \(R,\) which subtend an angle 3π2 radian at its centre. The magnetic induction \(B\) at the centre is:
1. \(\frac{\mu_0i}{R}\)
2. \(\frac{\mu_0i}{2R}\)
3. \(\frac{2\mu_0i}{R}\)
4. \(\frac{3\mu_0i}{8R}\)

 87%
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