AIEEE 2002 | Magnetic Effect of Current Question 236 | 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 $$1$$? AIEEE 2002 Physics - Magnetic Effect of Current Question 215 English

AIEEE 2002 Physics - Magnetic Effect of Current Question 215 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 an electron and a proton having same momentum enter perpendicular to a magnetic field, then

curved path of electron and proton will be same (ignoring the sense of revolution)

they will move undeflected

curved path of electron is more curved than that of the proton

path of proton is more curved.

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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