The effective capacity of the network between terminals \(\mathrm{A}\) and \(\mathrm{B}\) is:

  

1. \(6~\mu\text{F}~\)
2. \(20~\mu\text{F} ~\)
3. \(3~\mu\text{F}~\)
4. \(10~\mu\text{F}\)

Subtopic:  Combination of Capacitors |
 91%
From NCERT
AIPMT - 1999
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Eight equally charged tiny drops are combined to form a big drop. If the potential on each drop is 10 V, then the potential of the big drop will be:

1. 40 V 2. 10 V
3. 30 V 4. 20 V
Subtopic:  Electric Potential |
 74%
From NCERT
AIPMT - 1999
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The energy and capacity of a charged parallel plate capacitor are \(E\) and \(C\) respectively. If a dielectric slab of \(E_r=6\) is inserted in it, then the energy and capacity become:
(Assuming the charge on plates remains constant)

1. \(6 \mathrm E,~6 \mathrm C\) 2. \( \mathrm E,~ \mathrm C\)
3. \({E \over 6},~6 \mathrm C\) 4. \( \mathrm E,~6 \mathrm C\)
Subtopic:  Energy stored in Capacitor |
 76%
From NCERT
AIPMT - 1999
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A capacitor is charged with a battery and energy stored is U. After disconnecting the battery another capacitor of the same capacity is connected in parallel with it. The energy stored in each capacitor is:

1. U/2

2. U/4

3. 4 U

4. 2 U

Subtopic:  Electric Potential Energy |
 52%
From NCERT
AIPMT - 2000
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Energy per unit volume for a capacitor having area \(A\) and separation \(d\) kept at a potential difference \(V\) is given by:
1. \(\frac{1}{2}\varepsilon_0\frac{V^2}{d^2}\)
2. \(\frac{1}{2}\frac{V^2}{\varepsilon_0d^2}\)
3. \(\frac{1}{2}CV^2\)
4. \(\frac{Q^2}{2C}\)

Subtopic:  Energy stored in Capacitor |
 81%
From NCERT
AIPMT - 2001
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Some charge is being given to a conductor. Then it's potential:

1. is maximum at the surface.
2. is maximum at the centre.
3. remains the same throughout the conductor.
4. is maximum somewhere between the surface and the centre.

Subtopic:  Electrostatic Shielding |
 74%
From NCERT
AIPMT - 2002
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A capacitor of capacity C1 is charged up to V volt and then connected to an uncharged capacitor C2. Then final P.D. across each will be:

1. C2VC1+C2

2. C1VC1+C2

3. 1+C2C1

4. (1-C2C1)V

Subtopic:  Combination of Capacitors |
 78%
From NCERT
AIPMT - 2002
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If identical charges (–q) are placed at each corner of a cube of side 'b' then the electrical potential energy of charge (+q) which is placed at centre of the cube will be:

1. -42q2πε0b

2. -82q2πε0b

3. -4q23πε0b

4. 82q24πε0b

Subtopic:  Electric Potential Energy |
 63%
From NCERT
AIPMT - 2002
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Three capacitors each of capacity \(4\) µF are to be connected in such a way that the effective capacitance is \(6\) µF. This can be done by:

1.  connecting all of them in a series.
2. connecting them in parallel.
3. connecting two in series and one in parallel.
4. connecting two in parallel and one in series.

Subtopic:  Combination of Capacitors |
 89%
From NCERT
AIPMT - 2003
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A bullet of mass 2 g is having a charge of 2 µC. Through what potential difference must it be accelerated, starting from rest, to acquire a speed of 10 m/s?
1. 50 kV
2. 5 V
3. 50 V
4. 5 kV 
 

Subtopic:  Electric Potential |
 77%
From NCERT
AIPMT - 2004
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