Arrange the following in the order of their resistance.
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. A > B > C > D 2. D > C > B > A
3. D > A > B > C 4. C > B > A > D
Subtopic:  Derivation of Ohm's Law |
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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 |
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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 |
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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:  Derivation of Ohm's Law |
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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:  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:  Derivation of Ohm's Law |
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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:  Derivation of Ohm's Law |
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The reciprocal of resistance is:
1. reactance 2. mobility
3. conductivity 4. conductance
Subtopic:  Derivation of Ohm's Law |
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Which of the following graph represents the variation of resistivity (ρ) with temperature (\(T\)) for copper?

1. 2.
3. 4.
Subtopic:  Derivation of Ohm's Law |
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Two solid conductors are made up of the same material and have the same length and the same resistance. One of them has a circular cross-section of area A1 and the other one has a square cross-section of area A2. The ratio A1/A2 is:

1. \(1.5\) 2. \(1\)
3. \(0.8\) 4. \(2\)
Subtopic:  Derivation of Ohm's Law |
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