Embibe Experts Solutions for Chapter: Moving Charges and Magnetism, Exercise 1: Exercise

An electron is moving in a horizontal circular orbit in the anti-clockwise direction when seen from above. What is the direction of the magnetic field produced by the moving electron at the centre of the orbit?

Equal currents $\mathrm{I}$ and $\mathrm{I}$ are flowing through two infinitely-long parallel wires. What will be the magnetic field at a point mid-way between them, when the currents are in same direction,

Equal currents $\mathrm{I}$ and $\mathrm{I}$ are flowing through two infinitely-long parallel wires. What will be the magnetic field at a point mid-way between them, when the currents are in opposite directions ?

A current is flowing through a thin, straight metallic conductor of infinite length. Find expression for the magnetic field at a distance from it.

What do you mean by Biot-Savart’s law? Derive expression for magnetic field due a current-carrying conductor of infinite length. Name the rule which determines the direction of the magnetic field.

Two infinitely long insulated wires are kept perpendicular to each other. They carry currents $I_{\mathit{1}}\mathit{ }\mathit{=}\mathit{ }\mathit{2}A$ and ${\mathrm{I}}_2 = 1.5\mathrm{A}$ .

(i) Find the magnitude and direction of the magnetic field at $\mathrm{p}$.

Two infinitely long insulated wires are kept perpendicular to each other. They carry currents${\mathrm{I}}_1 = 2\mathrm{A}$ and${\mathrm{I}}_2 = 1.5\mathrm{A}$. If the direction of current be reversed in one of the wires, what would be the magnitude of the field?

Shows a long straight wire of a circular cross-section (radius a) carrying steady current $I$. The current $I$ is uniformly distributed across this cross-section. Calculate the magnetic field in the region $r<a$ and $r>a$.