Force between Current Carrying Wires

In given figure, X and Y are two long straight parallel conductors each carrying a current of 2 A. The force on each conductor is F newtons. When the current in each is changed to 1 A and reversed in direction, the force on each is now

Which of the following expressions correctly describes for the force between two long parallel current carrying conductors:

The force acting per unit length on one conductor due to the other for two long parallel current-carrying wires is

Two straight parallel wires, both carrying $10$ amperes currents in the same direction attracts each other with a force of $1\times {10}^{-3} \mathrm{N}$. If both currents are doubled, the force of attraction will

Two infinite line-charges parallel to each other are moving with a constant velocity $v$ in the same direction as shown in the figure. The separation between two line-charges is $d$. The magnetic attraction balances the electric repulsion when, [$c=$speed of light in free space]

Where the neutral point lies?

The force between two parallel current-carrying conductors separated by a distance $x$ is $F$. If the current in each conductor is double and the  distance between them is halved, then the force between them becomes.

A straight uncharged conductor carries a current $i$. Assume that all the free electrons in the conductor move with the same drift velocity $v$. $A$ is a stationary observer while $B$ is moving with some uniform non-relativistic velocity. (Consider only finite changes)

Two long straight wires carrying the same current $I$ are separated by a distance $d$. The force per unit length between the currents in this situation is $F$. If the current magnitude in each wire is increased to $4I$ and simultaneously the distance between them is reduced to $\frac{d}{3}$, the magnitude of the force per unit length would become

Two wires carrying the same current in the same direction and placed $1 \mathrm{cm}$ apart will experience

A rectangular loop carrying a current $i$ is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in the plane of the loop. If the steady current $i$ is established in the wire as shown in the figure, the loop will

A current of $10 A$ passes through two very long wires held parallel to each other and separated by a distance of $1 \mathrm{m}.$ The magnitude of force per unit length between them is [Use in $\frac{{\mu }_0}{4\pi }={10}^{-7}$S.I. unit]

Through two parallel wires $A$ and $B,10$ and $2$ ampere of currents are passed respectively in opposite direction. If the wire A is infinitely long and the length of the wire $B$ is $2 \mathrm{m},$ the force on the conductor $B\mathit{,}$ which is situated at $10 \mathrm{cm}$ distance from $A$ will be :-

Two wire of length $2 \mathrm{m}$ each are parallel and are at a distance $0.2 \mathrm{m}$ from each other. If the current in both the wires is $0.2 \mathrm{A}$ in the same direction. Find force per unit length on them.

Define $\text{1 ampere}$ in SI unit.

Two parallel wires carrying electric current in the same direction will attract each other because.

Two horizontal parallel straight conductors, each $20 \mathrm{c}\mathrm{m}$ long, are arranged one vertically above the other, and carry equal currents in opposite directions. The lower conductor is fixed while the other is free to move in guides remaining parallel to the lower. If the upper conductor weighs $1.0 \mathrm{g}$, what is the approximate current (in $\mathrm{A}$) that will remain the conductors at a distance $0.50 \mathrm{c}\mathrm{m}$ apart?

A current carrying rectangular loop PQRS is made of uniform wire. The length PR=QS=5 cm and PQ=RS=100 cm. If ammeter current reading changes from I to 2I, the ratio of magnetic forces per unit length on the wire PQ due to wire RS in the two cases respectively ${\mathrm{f}}_{\mathrm{PQ}}^{\mathrm{I}} : {\mathrm{f}}_{\mathrm{PQ}}^{2\mathrm{I}} \mathrm{is}:$

Two long horizontal wires are kept parallel at a distance $2 \mathrm{cm}$ apart in a vertical plane. Both wires have equal currents in the same direction. The lower wire has a mass of $50 \mathrm{milligram}/\mathrm{cm}$. If the lower wire appears weightless, what is the current in each wire ?