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1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
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
A
$$\left( {{{M{v^2}} \over R}} \right)2\pi R$$
B
zero
C
$$B\,\,Q\,2\pi R$$
D
$$B\,Qv\,2\pi R$$
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
If a current is passed through a spring then the spring will
A
expand
B
compress
C
remains same
D
none of these
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
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
A
$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\tan \,\theta $$
B
$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta $$
C
$${{{\mu _0}} \over {2\pi r}}{i_1}{i_2}\,dl\,\cos \,\theta $$
D
$${{{\mu _0}} \over {4\pi r}}{i_1}{i_2}\,dl\,\sin \,\theta $$
4
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
If an electron and a proton having same momentum enter perpendicular to a magnetic field, then
A
curved path of electron and proton will be same (ignoring the sense of revolution)
B
they will move undeflected
C
curved path of electron is more curved than that of the proton
D
path of proton is more curved.
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