Magnetic Effects of Current

A square loop of area$25cm^{2}$has a resistance of$10\Omega$. The loop is placed in uniform magnetic field of magnitude$40.0T$. The plane of loop is perpendicular to the magnetic field. The work done in pulling the loop…

A positive, singly ionized atom of mass number $A_{\mathrm{M}}$ is accelerated from rest by the voltage $192 \mathrm{~V}$. Thereafter, it enters a rectangular region of width $w$ with magnetic field $\vec{B}_0=0.1…

A thin stiff insulated metal wire is bent into a circular loop with its two ends extending tangentially from the same point of the loop. The wire loop has mass $m$ and radius $r$ and it is in a uniform vertical magnetic…

An infinitely long wire, located on the $z$-axis, carries a current $I$ along the $+z$-direction and produces the magnetic field $\vec{B}$. The magnitude of the line integral $\int \vec{B} \cdot \overrightarrow{d l}$…

Which one of the following options represents the magnetic field $B\to$ at $O$ due to the current flowing in the given wire segments lying on the $xy$ plane?

A small circular loop of area $A$ and resistance $R$ is fixed on a horizontal $xy$-plane with the center of the loop always on the axis $n^$ of a long solenoid. The solenoid has $m$ turns per unit length and carries…

Paragraph A special metal $S$ conducts electricity without any resistance. A closed wire loop, made of $S$, does not allow any change in flux through itself by inducing a suitable current to generate a compensating…

Two concentric circular loops, one of radius $R$ and the other of radius $2R$, lie in the $xy$-plane with the origin as their common center, as shown in the figure. The smaller loop carries current $I_{1}$ in the…

A circular coil of radius $R$ and $N$ turns has negligible resistance. As shown in the schematic figure, its two ends are connected to two wires and it is hanging by those wires with its plane being vertical. The wires…

Two identical moving coil galvanometer have $10Ω$ resistance and full scale deflection at $2 μA$ current. One of them is converted into a voltmeter of $100mV$ full scale reading and the other into an Ammeter of $1mA$…

Two infinitely long straight wires lie in the xy - plane along the lines $x=\pm R$. The wire located at $x=+R$ carries a constant current $I_{1}$ and the wire located at $x=-R$ carries a constant current $I_{2}$. A…

A uniform magnetic field B exists in the region between $x=0$ and $x=\frac{3R}{2}$ (region 2 in the figure) pointing normally into the plane of the paper. A particle with charge $+Q$ and momentum p directed along $x$…