Magnetic Effects of Current and Magnetism-Biot - Savart Law (KVPY Stream-SA (Class 11) Physics): Questions 1 - 2 of 2

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Question number: 1

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

Three infinitely long identical conductors are placed along OX, OY and OZ of coordinate axes, O being their common end. Current in OX is 2I and those in OY and OZ are I and I. The magnetic field at point P (0, -d, 0) is –

Choices

Choice (4) Response
a.

5μ04πId

b.

μ04πId

c.

2μ04πId

d.

5μ04πId

Question number: 2

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

MCQ▾

Question

The magnetic field at the center of hydrogen atom due to its revolving electron is –

Given: radius of electronic orbit = 0.67 Å, Velocity of the electron =2.8106ms

Choices

Choice (4) Response
a.

8.75 T

b.

9.98 T

c.

11.75 T

d.

10.12 T

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