Magnetic Effect of Current-I Physics Test Series IIT JEE

Test Preparation on Magnetic Effect of Current-I-Physics Test Series IIT JEE-2020

1.

11
22
33
44

2.

A horizontal overhead power line is at a height of 4 m from
the ground and carries a current of 100 A from east to west.
The magnetic field directly below it on the ground is
( 4 10 ) 7 1
0
m = p ´ - TmA-

15 × 10 –6 T northward
25 × 10 –6 T southward
32.5 × 10 –7 T northward
42.5 × 10 –7 T southward

3.

The magnetic field due to a current carrying circular loop of
radius 3 cm at a point on the axis at a distance of 4 cm from
the centre is 54 mT. What will be its value at the centre of the
loop

1250 m T
2150 m T
3125 m T
475 m T

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