EASY
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IMPORTANT
Earn 100

Intensity of magnetic field of the earth at a point inside a hollow iron box is :
(a)(A) less than out side
(b)(B) more than out side
(c)(C) same
(d)(D) zero

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Important Questions on Magnetic Effect of Current
MEDIUM
JEE Main/Advance
IMPORTANT

EASY
JEE Main/Advance
IMPORTANT

HARD
JEE Main/Advance
IMPORTANT

MEDIUM
JEE Main/Advance
IMPORTANT

EASY
JEE Main/Advance
IMPORTANT

EASY
JEE Main/Advance
IMPORTANT
and are two concentric circular conductors of centre and carrying current and as shown in the diagram. If ratio of their radii and ratio of the flux densities at due to and is then the value of will be-

EASY
JEE Main/Advance
IMPORTANT
Two thick wires and two thin wires, all of the same materials and same length form a square in the three different ways and as shown in fig with current direction shown, the magnetic field at the centre of the square is zero in case

EASY
JEE Main/Advance
IMPORTANT
