SATHEE: moving-charges-and-magnetism Question 35

moving-charges-and-magnetism Question 35

Question: Q. 12. (i) Two long straight parallel conductors ’ $a$ ’ and ’ $b$ ‘, carrying steady currents $I_{a}$ and $I_{b}$ are separated by a distance $d$ . Write the magnitude and direction of the magnetic field produced by the conductor ’ $a$ ’ at the points along the conductor ’ $b$ ‘. If the currents are flowing in the same direction, what is the nature and magnitude of the force between the two conductors?

(ii) Show with the help of a diagram how the force between the two conductors would change when the currents in them, flow in the opposite directions.

U[Foreign 2014]

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Solution:

Ans. (i) The magnitude of magnetic field produced by conductor ’ $a$ ’ at a point on the conductor $b$ .

$1 / 2$

The direction of magnetic field will be inward / outward perpendicular to the plane of the two conductors, depending on the direction of flow of current in conductor ’ $a$ ‘.

Force per unit length, $\frac{F}{l} = \frac{μ_{0} I_{a} I_{b}}{2 π d}$

Nature : attractive

(ii)

(Any one of the diagram) 1

[CBSE Marking Scheme, 2014]

Moving Charges And Magnetism

moving-charges-and-magnetism Question 35

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Moving Charges And Magnetism

moving-charges-and-magnetism Question 35

Table of Contents

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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