1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Two insulating plates are both uniformly charged in such a way that the potential difference between them is $${V_2} - {V_1} = 20\,V.$$ (i.e., plate $$2$$ is at a higher potential). The plates are separated by $$d=0.1$$ $$m$$ and can be treated as infinitely large. An electron is released from rest on the inner surface of plate $$1.$$ What is its speed when it hits plate $$2$$?
$$\left( {e = 1.6 \times {{10}^{ - 19}}\,C,\,\,{m_e} = 9.11 \times {{10}^{ - 31}}\,kg} \right)$$ AIEEE 2006 Physics - Electrostatics Question 186 English
A
$$2.65 \times {10^6}\,m/s$$
B
$$7.02 \times {10^{12}}\,m/s$$
C
$$1.87 \times {10^6}\,m/s$$
D
$$32 \times {10^{ - 19}}\,m/s$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Two point charges $$+8q$$ and $$-2q$$ are located at $$x=0$$ and $$x=L$$ respectively. The location of a point on the $$x$$ axis at which the net electric field due to these two point charges is zero is
A
$${L \over 4}$$
B
$$2$$ $$L$$
C
$$4$$ $$L$$
D
$$8$$ $$L$$
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Two thin wire rings each having a radius $$R$$ are placed at a distance $$d$$ apart with their axes coinciding. The charges on the two rings are $$+q$$ and $$-q.$$ The potential difference between the centres of the two rings is
A
$${q \over {2\pi \,{ \in _0}}}\left[ {{1 \over R} - {1 \over {\sqrt {{R^2} + {d^2}} }}} \right]$$
B
$${{qR} \over {4\pi \,{ \in _0}\,{d^2}}}$$
C
$${q \over {4\pi \,{ \in _0}}}\left[ {{1 \over R} - {1 \over {\sqrt {{R^2} + {d^2}} }}} \right]$$
D
zero
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A charged ball $$B$$ hangs from a silk thread $$S,$$ which makes angle $$\theta $$ with a large charged conducting sheet $$P,$$ as shown in the figure. The surface charge density $$\sigma $$ of the sheet is proportional to AIEEE 2005 Physics - Electrostatics Question 190 Englishf
A
$$\cot \,\theta $$
B
$$\cos \,\theta $$
C
$$\tan \,\theta $$
D
$$\sin \,\theta $$
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