- 1(current)
Q. No.Which of the following statements is correct regarding the electrostatics of conductors?
| 1. | The interior of the conductor with no cavity can have no excess charge in the static situation. |
| 2. | The electrostatic potential is constant throughout the volume of the conductor. |
| 3. | The electrostatic potential has the same value inside as that on its surface. |
| 4. | All of the above statements are correct. |
Subtopic: Â Electrostatic Shielding |
 88%
Level 1: 80%+
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A conducting sphere of radius \(R\) is given a charge \(Q\). The electric potential and field at the centre of the sphere respectively are:
| 1. | Zero and \({Q} / 4 \pi \varepsilon_{0} {R}^2\) |
| 2. | \({Q} / 4 \pi \varepsilon_{0} {R}\) and zero |
| 3. | \({Q} / 4 \pi \varepsilon_{0} {R}\) and \({Q} / 4 \pi \varepsilon_{0}{R}^2\) |
| 4. | Both are zero |
Subtopic: Â Electrostatic Shielding |
 87%
Level 1: 80%+
NEET - 2014
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Given below are two statements:
| Assertion (A): | A metallic shield in the form of a hollow shell may be built to block an electric field. |
| Reason (R): | In a hollow spherical shield, the electric field inside it is zero at every point. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Electrostatic Shielding |
 85%
Level 1: 80%+
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Two concentric metallic spherical shells \(A\) and \(B\) of radii \(a\) and \(b\) respectively \((b>a)\) are arranged such that outer shell is earthed and inner shell is charged to \(Q\). Charge on the outer surface of outer shell will be:
1. \(- \frac{Q a}{b}\)
2. \(Q \left[1 - \frac{a}{b}\right]\)
3. \(-Q\)
4. zero
Subtopic: Â Electrostatic Shielding |
Level 3: 35%-60%
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Two concentric conducting spherical shells carry charge \(Q\) each. The inner shell is earthed. The charge that flows into the earth is:
| 1. | \(Q\) | 2. | \(\frac{3Q}{2}\) |
| 3. | \(\frac{-Q}{2}\) | 4. | \(\frac{-3Q}{2}\) |
Subtopic: Â Electrostatic Shielding |
Level 3: 35%-60%
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- 1(current)
Q. No.
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