Question

1)24 A long wire carries a steady current. It is bent into a circle of one tum and the magnetic field at the centre
of the coil is B. It is then bent into a circular loop of n turns. The magnetic field at the centre of the coil will
be-
(1) nB
(2) n²B (3) 2nB
(4) 2nB
2)A particle of charge -16* 10.18C moving with velocity 10 ms-' along the x-axis enters a region where
a magnetic field of induction B is along the y-axis and an electric field of magnitude 104 V/m is along the
negative z-axis If the charged particle continues moving along the x-axis, the magnitude of B is-
(1) 103 Wb/m2 (2) 105 Wb/m2 (3) 1016 Wb/m2 (4) 10-3 Wb/m2​

Answer 1

Answer:

1)Answer is 2

2)answer is 10.4

Explanation:

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