(c) Magnetic field produced by wire is perpendicular to the motion of electron and it is given by $B = \frac{{{\mu _0}}}{{4\pi }} \cdot \frac{{2i}}{a

(c) Magnetic field produced by wire is perpendicular to the motion of electron and it is given by $B = \frac{{{\mu _0}}}{{4\pi }} \cdot \frac{{2i}}{a} = {10^{ - 7}} \times \frac{{2 \times 5}}{{0.1}} = {10^{ - 5}}\,Wb/{m^2}$ Hence force on electron $F = qvB = (1.6 \times {10^{ - 19}}) \times 5 \times {10^6} \times {10^{ - 5}} = 8 \times {10^{ - 18}}\,N$

4.Moving Charges and MagnetismMedium

A straight conductor carries a current of $5A$. An electron travelling with a speed of $5 \times {10^6}\,m{s^{ - 1}}$ parallel to the wire at a distance of $0.1\,m$ from the conductor, experiences a force of

A
$8 \times {10^{ - 20}}\,N$
B
$3.2 \times {10^{ - 19}}\,N$
C
$8 \times {10^{ - 18}}\,N$
D
$1.6 \times {10^{ - 19}}\,N$

Std 12
Physics

Wires $1$ and $2$ carrying currents ${i_1}$ and ${i_2}$respectively are inclined at an angle $\theta $ to each other. What is the force on a small element $dl$ of wire $2$ at a distance of $r$ from wire $1$ (as shown in figure) due to the magnetic field of wire $1$

Medium

[AIEEE 2002]

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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

Medium

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Two coaxial solenoids of different radii carry current $I$ in the same direction. Let $\;{\overrightarrow {\;F} _1}$ be the magnetic force on the inner solenoid due to the outer one and $\;{\overrightarrow {\;F} _2}$ be the magnetic force on the outer solenoid due to the inner one. Then

Medium

[JEE MAIN 2015]

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A rigid square loop of side $a$ and carrying current $I_2$ is laying on a horizontal surface near a long current $I_1$ wire in the same plane as shown in figure. The net force on the loop due to the wire will be

Difficult

[JEE MAIN 2019]

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A straight wire of mass $200 \;g$ and length $1.5 \;m$ carrles a current of $2\; A$. It is suspended in mid-air by a uniform horizontal magnetic fleld $B$ (Figure). What is the magnitude of the magnetic fleld (in $T$)?

Medium

View Solution

A straight conductor carries a current of $5A$. An electron travelling with a speed of $5 \times {10^6}\,m{s^{ - 1}}$ parallel to the wire at a distance of $0.1\,m$ from the conductor, experiences a force of

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Wires $1$ and $2$ carrying currents ${i_1}$ and ${i_2}$respectively are inclined at an angle $\theta $ to each other. What is the force on a small element $dl$ of wire $2$ at a distance of $r$ from wire $1$ (as shown in figure) due to the magnetic field of wire $1$

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