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Important Questions: Biot Savart law and its application to the current carrying circular loop for JEE

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Syllabus context

Part of Magnetic Effects of Current and Magnetism in JEE Main Physics.

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Q1PhysicsUnit 13: Magnetic Effects of Current and Magnetism

Lis a circular ring made of a uniform wire. Current enters and leaves the rind through straight conductors which, if produced, would have passed through the centre

C

of the ring. The magnetic field at

C:

This question has multiple correct options

Q2PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A wire in the form of a circular loop of one turn carrying a current produces a magnetic field

B

at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is:

Q3PhysicsUnit 13: Magnetic Effects of Current and Magnetism

The Magnetic effect of current was discovered by:

Q4PhysicsUnit 13: Magnetic Effects of Current and Magnetism

The electric current in a circular coil of two turns produced a magnetic induction of

0.2 \mathrm{T}

at its centre. The coil is unwound and then rewound into a circular coil of four turns. If same current flows in the coil, the magnetic induction at the centre of the coil now is:

Q5PhysicsUnit 13: Magnetic Effects of Current and Magnetism

In hydrogen atom, an electron is revolving in the orbit of radius

0.53 \dot{A}

with

6.6 \times 10^{15}

radiation/s. Magnetic field produced at the centre of the orbit is

Q6PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A moving charge will produce

Q7PhysicsUnit 13: Magnetic Effects of Current and Magnetism

A circular loop of radius

\boldsymbol{R}

, carrying current

I

, lies in

x-y

plane with its center at the origin. The total magnetic flux through

x-y

plane is This question has multiple correct options

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