Select Chapter Topics:
Q. No.
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
A cell having an emf \(\varepsilon\) and internal resistance \(r\) is connected across a variable external resistance \(R\). As the resistance \(R\) is increased, the plot of potential difference \(V\) across \(R\) is given by:
1.
2.
3.
4.
Subtopic: EMF & Terminal Voltage |
62%
Level 2: 60%+
AIPMT - 2012
Hints
Links
Kirchhoff's junction rule is a reflection of:
| (a) | conservation of the current density vector. |
| (b) | conservation of charge. |
| (c) | the fact that the momentum with which a charged particle approaches a junction is unchanged (as a vector) as the charged particle leaves the junction. |
| (d) | the fact that there is no accumulation of charges at a junction. |
Which of the above statements are correct?
| 1. | (b) and (c) |
| 2. | (a) and (c) |
| 3. | (b) and (d) |
| 4. | (c) and (d) |
Subtopic: Kirchoff's Current Law |
72%
Level 2: 60%+
Hints
Links
Subtopic: Derivation of Ohm's Law |
84%
Level 1: 80%+
Hints
Figure (i) and figure (ii) both are showing the variation of resistivity \((\rho)\) with a temperature \((T)\) for some materials. Identify the type of these materials.
1. Conductor and semiconductor
2. Conductor and Insulator
3. Insulator and semiconductor
4. Both are conductors
Subtopic: Derivation of Ohm's Law |
83%
Level 1: 80%+
Hints
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
Given below are two statements:
Several resistances \(R_1, R_2, .........R_n\) are connected in parallel. The equivalent resistance of the combination is \(R\).
Several resistances \(R_1, R_2, .........R_n\) are connected in parallel. The equivalent resistance of the combination is \(R\).
| Assertion (A): | The fractional error in \(R\) is most affected by that of the smallest resistance in the combination, other things being equal. |
| Reason (R): | In parallel, the conductances add. The contribution to the overall error in the conductance is largest for the largest conductance or the smallest resistance. |
| 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: Combination of Resistors |
58%
Level 3: 35%-60%
Hints
The electric current through a wire varies with time as shown in the figure.
The total charge flown across any cross-section of the wire in the time interval \((0 \text-T)\) is:
The total charge flown across any cross-section of the wire in the time interval \((0 \text-T)\) is:
| 1. | \( {i}_{0}T\) | 2. | \( \dfrac{{i}_{0}T}{2}\) |
| 3. | \( \dfrac{{i}_{0}T}{3}\) | 4. | \( \dfrac{{i}_{0}T}{\sqrt{2}}\) |
Subtopic: Current & Current Density |
72%
Level 2: 60%+
Hints
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Resistance of a conducting metallic wire depends on the voltage applied across it and current passing through it. |
| Reason (R): | Ohm's law is also valid for semiconductors. |
In the light of the above statements choose the correct answer from the options given below:
| 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. | Both (A) and (R) are false. |
Subtopic: Derivation of Ohm's Law |
59%
Level 3: 35%-60%
Hints
The current-voltage graph for a given metallic conductor at two different temperatures \(T_{1}\) and \(T_{2}\) is as shown in the figure. Then:
1. \(T_{1}=T_{2}\)
2. \(T_{2}>T_{1}\)
3. \(T_{1}>T_{2}\)
4. Insufficient information to conclude.
1. \(T_{1}=T_{2}\)
2. \(T_{2}>T_{1}\)
3. \(T_{1}>T_{2}\)
4. Insufficient information to conclude.
Subtopic: Derivation of Ohm's Law |
76%
Level 2: 60%+
Hints
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | When an external resistor of resistance R (connected across a cell of internal resistance r) is varied power consumed by resistance R is maximum when R=r. |
| Reason (R): | Power consumed by a resistor of constant resistance R is maximum when the current through it is maximum. |
In the light of the above statements choose the correct answer from the options given below:
| 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. | Both (A) and (R) are false. |
Subtopic: Heating Effects of Current |
Level 3: 35%-60%
Hints
Four identical bulbs \(A\), \(B\), \(C\) and \(D\) are connected in a circuit as shown in the figure. Now whenever any bulb fails, then it cannot conduct current through it. Then which of the following statement(s) is/are true?
Choose the correct option from the options given below:
| (i) | The brightness of bulb \(C\) is the highest. |
| (ii) | If \(A\) fails, \(B\) will not glow. |
| (iii) | If \(C\) fails, the brightness of bulb \(D\) increases. |
Choose the correct option from the options given below:
| 1. | (i) only |
| 2. | (ii) only |
| 3. | (i) and (ii) only |
| 4. | (ii) and (iii) only |
Subtopic: Heating Effects of Current |
64%
Level 2: 60%+
Hints
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.