AIEEE 2003 | Magnetic Effect of Current Question 215 | Physics

A particle of mass $$M$$ and charge $$Q$$ moving with velocity $$\overrightarrow v $$ describe a circular path of radius $$R$$ when subjected to a uniform transverse magnetic field of induction $$B.$$ The network done by the field when the particle completes one full circle is

$$\left( {{{M{v^2}} \over R}} \right)2\pi R$$

zero

$$B\,\,Q\,2\pi R$$

$$B\,Qv\,2\pi R$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

A particle of charge $$ - 16 \times {10^{ - 18}}$$ coulomb moving with velocity $$10m{s^{ - 1}}$$ along the $$x$$-axis enters a region where a magnetic field of induction $$B$$ is along the $$y$$-axis, and an electric field of magnitude $${10^4}V/m$$ is along the negative $$z$$-axis. If the charged particle continues moving along the $$x$$-axis, the magnitude of $$B$$ is

$${10^3}Wb/{m^2}$$

$${10^5}Wb/{m^2}$$

$${10^{16}}Wb/{m^2}$$

$${10^{ - 3}}Wb/{m^2}$$

AIEEE 2002

MCQ (Single Correct Answer)

-1

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 $$1$$? AIEEE 2002 Physics - Magnetic Effect of Current Question 196 English

AIEEE 2002 Physics - Magnetic Effect of Current Question 196 English

$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\tan \,\theta $$

$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta $$

$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\cos \,\theta $$

$${{{\mu _0}} \over {4\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta $$

AIEEE 2002

MCQ (Single Correct Answer)

-1

If in a circular coil $$A$$ of radius $$R,$$ current $$I$$ is flowing and in another coil $$B$$ of radius $$2R$$ a current $$2I$$ is flowing, then the ratio of the magnetic fields $${B_A}$$ and $${B_B}$$, produced by them will be

$$1$$

$$2$$

$$1/2$$

$$4$$

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