- 1(current)
Q. No.The plot of current \(I~\text{(A)}\) flowing through a metallic conductor versus the applied voltage \(V~\text{(volt)}\) across the ends of a conductor is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Derivation of Ohm's Law |
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A certain wire \(A\) has resistance \(81\) \(\Omega\). The resistance of another wire \(B\) of the same material and equal length but of diameter thrice the diameter of \(A\) will be:
| 1. | \(81\) \(\Omega\) | 2. | \(9\) \(\Omega\) |
| 3. | \(729\) \(\Omega\) | 4. | \(243\) \(\Omega\) |
Subtopic: Â Derivation of Ohm's Law |
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NEET - 2023
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On the basis of electrical conductivity, which one of the following material has the smallest resistivity?
| 1. | Germanium | 2. | Silver |
| 3. | Glass | 4. | Silicon |
Subtopic: Â Derivation of Ohm's Law |
 61%
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As the temperature of a metallic resistor is increased, the product of its resistivity and conductivity:
| 1. | increases |
| 2. | decreases |
| 3. | remains constant |
| 4. | may increase or decrease |
Subtopic: Â Derivation of Ohm's Law |
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Subtopic: Â Derivation of Ohm's Law |
 79%
From NCERT
NEET - 2022
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The resistance of platinum wire at \(0^{\circ} \text{C}\) is \(2~ \Omega\) and \(6.8~ \Omega\) at \(80^{\circ}\text{C}\). The temperature coefficient of resistance of the wire is:
| 1. | \((3\times 10^{-1})^\circ \text{C}^{-1}\) | 2. | \((3 \times 10^{-4})^\circ \text{C}^{-1}\) |
| 3. | \((3 \times 10^{-3})^\circ \text{C}^{-1}\) | 4. | \((3 \times 10^{-2})^\circ \text{C}^{-1}\) |
Subtopic: Â Derivation of Ohm's Law |
 68%
From NCERT
NEET - 2023
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- 1(current)
Q. No.
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