Select Chapter Topics:
Q. No.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 |
 73%
Level 2: 60%+
NEET - 2023
Hints
On the basis of electrical conductivity, which one of the following material has the smallest resistivity?
1. Germanium
2. Silver
3. Glass
4. Silicon
1. Germanium
2. Silver
3. Glass
4. Silicon
Subtopic: Â Derivation of Ohm's Law |
 65%
Level 2: 60%+
NEET - 2023
Hints
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 |
 75%
Level 2: 60%+
NEET - 2023
Hints
A copper wire of radius \(1\) mm contains \(10^{22}\) free electrons per cubic metre. The drift velocity for free electrons when \(10\) A current flows through the wire will be:
(Given, charge on electron = \(1.6\times10^{-19}\) C)
(Given, charge on electron = \(1.6\times10^{-19}\) C)
| 1. | \(\dfrac{6.25\times10^4}{\pi}\) m/s | 2. | \(\dfrac{6.25}{\pi}\times10^3\) m/s |
| 3. | \(\dfrac{6.25}{\pi}\) m/s | 4. | \(\dfrac{6.25\times10^5}{\pi}\) m/s |
Subtopic: Â Current & Current Density |
 74%
Level 2: 60%+
NEET - 2023
Hints
Subtopic: Â Derivation of Ohm's Law |
 81%
Level 1: 80%+
NEET - 2022
Hints
The equivalent resistance of the infinite network given below is:
1. \(2~\Omega\)
2. \((1+\sqrt2)~\Omega\)
3. \((1+\sqrt3)~\Omega\)
4. \((1+\sqrt5)~\Omega\)
1. \(2~\Omega\)
2. \((1+\sqrt2)~\Omega\)
3. \((1+\sqrt3)~\Omega\)
4. \((1+\sqrt5)~\Omega\)
Subtopic: Â Combination of Resistors |
 55%
Level 3: 35%-60%
NEET - 2022
Hints
A cell of emf \(4~\text{V}\) and internal resistance \(0.5~\Omega\) is connected to a \(7.5~\Omega\) external resistance. The terminal potential difference of the cell is:
| 1. | \(3.75~\text{V}\) | 2. | \(4.25~\text{V}\) |
| 3. | \(4~\text{V}\) | 4. | \(0.375~\text{V}\) |
Subtopic: Â EMF & Terminal Voltage |
 75%
Level 2: 60%+
NEET - 2022
Hints
A network of resistors is connected across a \(10~\text{V}\) battery with an internal resistance of \(1~\Omega\) as shown in the circuit diagram. The equivalent resistance of the circuit is:
1. \(\dfrac{17}{3}~\Omega\)
2. \(\dfrac{14}{3}~\Omega\)
3. \(\dfrac{12}{7}~\Omega\)
4. \(\dfrac{14}{7}~\Omega\)
Subtopic: Â Combination of Resistors |
 75%
Level 2: 60%+
NEET - 2022
Hints
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 |
 80%
Level 1: 80%+
NEET - 2022
Hints
A Wheatstone bridge is used to determine the value of unknown resistance \(X\) by adjusting the variable resistance \(Y\) as shown in the figure. For the most precise measurement of \(X\), the resistances \(P\) and \(Q\):
| 1. | do not play any significant role. |
| 2. | should be approximately equal to \(2X\). |
| 3. | should be approximately equal and are small. |
| 4. | should be very large and unequal. |
Subtopic: Â Wheatstone Bridge |
 75%
Level 2: 60%+
NEET - 2022
Hints
Select Chapter Topics:
© 2025 GoodEd Technologies Pvt. Ltd.