Force Between Two Current Carrying Wires, Current-Current Interaction

A conducting loop carrying a current $I$ is placed in a uniform magnetic field pointing into the plane of the paper as shown in Fig. The loop will have a tendency to

Two thin metal strips, carrying current in the directions shown, cross each other perpendicular without touching but being close to each other, as shown in Fig. The regions which contain some points of zero magnetic induction are

A particle $\left(\mathrm{a}\right)$ mass $m$ and charge $q$ is released at rest at the origin in a region in which there are electric and magnetic fields given by, $\overrightarrow{B}=-B_0\hat{\mathrm{j}}$ and $\overrightarrow{E}=-E_0\hat{\mathrm{k}}$. Find the speed of the particle as a function of its $Z-$ coordinate.

Two long straight parallel wires are $2 \mathrm{m}$ apart, perpendicular to the plane of the paper, Fig. The wire A carries a current of $9.6 \mathrm{A}$, directed into the plane of the paper. The wire $\mathrm{B}$ carries a current such that the magnetic field of induction at the point $\mathrm{P}$, at distance $\frac{10}{11} \mathrm{m}$ from the wire $\mathrm{B}$ is zero. Find The force per unit length on the wire $\mathrm{B}$.

A rectangular loop of wire of sign $2.5 \mathrm{cm}\times 4 \mathrm{cm}$ carries a steady current of $1 \mathrm{A}$. A straight wire carrying $2 \mathrm{A}$ current is kept near the loop as shown, Fig. If the loop and the wire are coplanar, find the magnitude and direction of the force on the loop due to the current carrying wire.

 Write down the expression for the force on a charge particle moving in a magnetic field. Then define tesla, the unit of magnetic field from these two expressions.

Write down the expression for the force of attraction of two very long parallel conductors carrying currents.

A current carrying wire does not feel any force when brought in a magnetic field. Explain how it happens.