Q. No.Arrange the following in the order of their resistance.
Choose the correct answer from the options given below:
| A. | (\(0\) to \(1~\text A\)) ranged ammeter. |
| B. | (\(0\) to \(100~\text {mA}\)) ranged milli-ammeter. |
| C. | (\(0\) to \(500~\mu\text A\)) ranged micro-ammeter. |
| D. | (\(0\) to \(100~\text V\)) ranged voltmeter. |
Choose the correct answer from the options given below:
| 1. | \(\mathrm{A > B > C > D}\) | 2. | \(\mathrm{D > C > B > A}\) |
| 3. | \(\mathrm{D > A > B > C}\) | 4. | \(\mathrm{C > B > A > D}\) |
Subtopic: Derivation of Ohm's Law |
53%
Level 3: 35%-60%
NEET - 2024
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In an electrical circuit, the voltage is measured as \({V}=(200\pm4)\) volts and the current is measured as \({I}=(20\pm0.2)~\text A.\) The value of the resistance is:
| 1. | \((10\pm4.2)~\Omega \) | 2. | \((10\pm0.3)~\Omega \) |
| 3. | \((10\pm0.1)~\Omega \) | 4. | \((10\pm0.8)~\Omega \) |
Subtopic: Derivation of Ohm's Law |
50%
Level 3: 35%-60%
NEET - 2024
Hints
The steady-state current in the circuit shown below is:
| 1. | \(0.67~\text A\) | 2. | \(1.5~\text A\) |
| 3. | \(2~\text A\) | 4. | \(1~\text A\) |
Subtopic: Derivation of Ohm's Law |
73%
Level 2: 60%+
NEET - 2024
Hints
A uniform wire of resistance \(50~\Omega\) \(\) is cut into \(5\) equal parts. These parts are now connected in parallel. The equivalent resistance of the combination is:
| 1. | \(2~\Omega\) \(\) | 2. | \(10~\Omega\) \(\) |
| 3. | \(250~\Omega\) \(\) | 4. | \(6250~\Omega\) |
Subtopic: Derivation of Ohm's Law |
77%
Level 2: 60%+
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A wire made of a metal of uniform resistivity \(1.0\times 10^{-6}~\Omega{\text{-m}}\) is \(2.0~\text{m}\) long and has a diameter of \(2.0\times 10^{-3}~\text{m}.\). What is the electrical resistance of this length of the wire?
| 1. | \(\dfrac {2.0 ~\times~10^{-3}}{\pi} ~\Omega\) | 2. | \(5.0 ~\times~10^{-13}\pi~\Omega\) |
| 3. | \(\dfrac {1.0}{2\pi}~\Omega\) | 4. | \(\dfrac{2.0}{\pi}~\Omega\) |
Subtopic: Derivation of Ohm's Law |
81%
Level 1: 80%+
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Two copper wires of length \(l\) and \(2l\) have radii \(r\) and \(2r\) respectively. What is the ratio of their specific resistances?
1. \(1:2\)
2. \(2:1\)
3. \(1:1\)
4. \(1:3\)
1. \(1:2\)
2. \(2:1\)
3. \(1:1\)
4. \(1:3\)
Subtopic: Derivation of Ohm's Law |
66%
Level 2: 60%+
Please attempt this question first.
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Please attempt this question first.
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: Derivation of Ohm's Law |
76%
Level 2: 60%+
NEET - 2023
Hints
As the temperature of a conductor increases, its resistivity and conductivity change. The ratio of resistivity to conductivity:
| (a) | increases |
| (b) | decreases |
| (c) | remains constant |
| (d) | may increase or decrease depending on the actual temperature |
Choose the correct option:
1. (a) only
2. (b), (c)
3. (c), (d)
4. (a), (d)
Subtopic: Derivation of Ohm's Law |
59%
Level 3: 35%-60%
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Given below are two statements:
| Statement I: | In a series combination of resistors, the equivalent resistance is smaller than the individual resistances. |
| Statement II: | The resistivity of a wire depends on its temperature. |
| 1. | Statement I is True and Statement II is False. |
| 2. | Statement I is False and Statement II is True. |
| 3. | Both Statement I and Statement II are True. |
| 4. | Both Statement I and Statement II are False. |
Subtopic: Derivation of Ohm's Law |
73%
Level 2: 60%+
Please attempt this question first.
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Please attempt this question first.
A metal rod of length 10 cm and a rectangular cross-section of \(1~ \text {cm} \times 1/2~ \text {cm}\) is connected to a battery across opposite faces. The resistance will be:
| 1. | maximum when the battery is connected across\(1~ \text {cm} \times 1/2~ \text {cm}\) faces. |
| 2. | maximum when the battery is connected across \(10~ \text {cm} \times 1~ \text {cm}\) faces. |
| 3. | maximum when the battery is connected across \(10~ \text {cm} \times 1/2~ \text {cm}\) faces. |
| 4. | same irrespective of the three faces. |
Subtopic: Derivation of Ohm's Law |
60%
Level 2: 60%+
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