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Q. No.The equivalent capacitance of the system shown in the following circuit is:
| 1. | \(9~\mathrm{\mu F}\) | 2. | \(2~\mathrm{\mu F}\) |
| 3. | \(3~\mathrm{\mu F}\) | 4. | \(6~\mathrm{\mu F}\) |
Subtopic: Combination of Capacitors |
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NEET - 2023
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An electric dipole is placed as shown in the figure.
The electric potential (in \(10^2~V\)) at point \(P\) due to the dipole is(\(\epsilon_0\)= permittivity of free space and \(\frac{1}{4 \pi \epsilon_0}=k\)):
1. \((\frac{8}{3})qk\)
2. \((\frac{3}{8})qk\)
3. \((\frac{5}{8})qk\)
4. \((\frac{8}{5})qk\)
The electric potential (in \(10^2~V\)) at point \(P\) due to the dipole is(\(\epsilon_0\)= permittivity of free space and \(\frac{1}{4 \pi \epsilon_0}=k\)):
1. \((\frac{8}{3})qk\)
2. \((\frac{3}{8})qk\)
3. \((\frac{5}{8})qk\)
4. \((\frac{8}{5})qk\)
Subtopic: Electric Potential |
57%
From NCERT
NEET - 2023
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The equivalent capacitance of the arrangement shown in the figure is:
| 1. | \(30\) \(\mu\)F | 2. | \(15\) \(\mu\)F |
| 3. | \(25\) \(\mu\)F | 4. | \(20\) \(\mu\)F |
Subtopic: Combination of Capacitors |
67%
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NEET - 2023
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If a conducting sphere of radius R is charged. Then the electric field at a distance r(r > R) from the centre of the sphere would be, (V=potential on the surface of the sphere):
| 1. | \(\frac{rV}{R^2}\) | 2. | \(\frac{R^2V}{r^3}\) |
| 3. | \(\frac{RV}{r^2}\) | 4. | \(\frac{V}{r}\) |
Subtopic: Electric Potential |
From NCERT
NEET - 2023
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Two hollow conducting spheres of radii \(R_1\) and \(R_2\) \(\left ( R_1\gg R_2 \right )\) have equal charges. The potential would be:
| 1. | dependent on the material property of the sphere |
| 2. | more on bigger sphere |
| 3. | more on smaller sphere |
| 4. | equal on both the spheres |
Subtopic: Electric Potential |
69%
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NEET - 2022
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The angle between the electric lines of force and the equipotential surface is:
| 1. | \(180^\circ\) | 2. | \(0^\circ\) |
| 3. | \(45^\circ\) | 4. | \(90^\circ\) |
Subtopic: Equipotential Surfaces |
80%
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NEET - 2022
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A capacitor of capacitance \(C=900~\text{pF}\) is charged fully by \(100~\text{V}\) battery \(B\) as shown in Figure \((a)\). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance \(C=900~\text{pF}\) as shown in Figure \((b)\). The electrostatic energy stored by the system \((b)\) is:
| 1. | \(1.5\times 10^{-6}~\text{J}\) | 2. | \(4.5\times 10^{-6}~\text{J}\) |
| 3. | \(3.25\times 10^{-6}~\text{J}\) | 4. | \(2.25\times 10^{-6}~\text{J}\) |
Subtopic: Energy stored in Capacitor |
55%
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NEET - 2022
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A hollow metal sphere of radius \(R\) is given \(+Q\) charges to its outer surface. The electric potential at a distance \(\frac{R}{3}\) from the centre of the sphere will be:
| 1. | \(\frac{1}{4\pi \varepsilon_0}\frac{Q}{9R}\) | 2. | \(\frac{3}{4\pi \varepsilon_0}\frac{Q}{R}\) |
| 3. | \(\frac{1}{4\pi \varepsilon_0}\frac{Q}{3R}\) | 4. | \(\frac{1}{4\pi \varepsilon_0}\frac{Q}{R}\) |
Subtopic: Electric Potential |
62%
From NCERT
NEET - 2022
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Three capacitors, each of capacitance \(0.3~\mu \text{F}\) are connected in parallel. This combination is connected with another capacitor of capacitance \(0.1~\mu \text{F}\) in series. Then the equivalent capacitance of the combination is:
| 1. | \(0.9~\mu\text{F}\) | 2. | \(0.09~\mu\text{F}\) |
| 3. | \(0.1~\mu\text{F}\) | 4. | \(0.01~\mu\text{F}\) |
Subtopic: Combination of Capacitors |
83%
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NEET - 2022
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When a particle with charge \(+q\) is thrown with an initial velocity \(v\) towards another stationary change \(+Q,\) it is repelled back after reaching the nearest distance \(r\) from \(+Q.\) The closest distance that it can reach if it is thrown with initial velocity \(2v,\) is:
| 1. | \(\frac{r}{4}\) | 2. | \(\frac{r}{2}\) |
| 3. | \(\frac{r}{16}\) | 4. | \(\frac{r}{8}\) |
Subtopic: Electric Potential Energy |
65%
From NCERT
NEET - 2022
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