Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 26

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The wire in the figure carries a current i and consists of a circular arc of radius R and central angle $\frac{π}{2}$ rad, and two straight sections whose extensions intersect the centre C of the arc. The magnetic field $\vec{B}$ that the current produces at C is :-

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Important Questions on Magnetic Effect of Current

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 27

In a current carrying long solenoid the field produced does not depend on :-

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 28

If the length and number of turns become half for a solenoid, then the value of magnetic field becomes,

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 29

If the number of turns and current become double for any solenoid, then the value of magnetic field becomes,

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 30

A current of

\frac{1}{4 π}

ampere is flowing through a toroid. It has

1000

number of turn per meter then value of magnetic field (in

Wb m^{- 2}

) along its axis is

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 31

Mean radius of a toroid is

10 cm

and number of turns are

500

. If current flowing through it is

0.1 A

then value of magnetic field (in Tesla) for toroid

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 32

A long solenoid has length L, average diameter D and n layer of turns. Each layer contains N turns. If current flowing through the solenoid is i the value of magnetic field at the centre :-

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 33

A long solenoid carrying a current produces a magnetic field

B

along its axis. If the current is doubled and the number of turns per

cm

is halved, the new value of magnetic field will be equal to

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Beta Question Bank for Medical: Physics>Chapter 25 - Magnetic Effect of Current>Exercise (Analytical Questions)>Q 34

A long solenoid has

200 turns {cm}^{- 1}

and carries current

i

. The magnetic field at its axis is

6.28 \times 10^{- 2} Wb m^{2}

. Another solenoid has

100 turns {cm}^{- 1}

and carries

\frac{i}{3}

current. Then, magnetic field at its axis will be,