When three identical bulbs are connected in series, the consumed power is $$10$$ W. If they are now connected in parallel then the consumed power will be:
1. $$30$$ W
2. $$90$$ W
3. $$\frac{10}{3}$$ W
4. $$270$$ W

Subtopic:  Heating Effects of Current |
67%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In a hot wire ammeter due to the flowing of the current, the temperature of the wire is increased by $$5^{\circ}$$ C. If the value of the current is doubled, then the increase in temperature will be:
1. $$15^{\circ}$$ C
2. $$20^{\circ}$$ C
3. $$25^{\circ}$$ C
4. $$30^{\circ}$$ C

Subtopic:  Heating Effects of Current |
68%
From NCERT
AIPMT - 1998
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The current in $$8~\Omega$$ resistance is (in the figure below):

1. $$0.69$$ A
2. $$0.92$$ A
3. $$1.30$$ A
4. $$1.6$$ A

Subtopic:  Kirchoff's Voltage Law |
56%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

If the power dissipated in $$5~\Omega$$ is $$20$$ W then the power dissipated in $$4~\Omega$$ is:

1. $$4$$ W
2. $$6$$ W
3. $$10$$
4. $$20$$ W

Subtopic:  Heating Effects of Current |
74%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The value of $$R$$ for which power in it is maximum is:

1. $$3~\Omega$$
2. $$6~\Omega$$
3. $$12~\Omega$$
4. $$9~\Omega$$

Subtopic:  Heating Effects of Current |
76%
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The terminal potential difference of a cell is greater than its emf when:

 1 A battery of less emf is connected in its series. 2 A battery of higher emf is connected in its series. 3 A battery of higher emf is connected in its parallel. 4 A battery of less emf is connected in its parallel.
Subtopic:  EMF & Terminal Voltage |
From NCERT
AIPMT - 1999
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The net resistance of the circuit between $$A$$ and $$B$$ is:

 1 $$\frac{8}{3}~\Omega$$ 2 $$\frac{14}{3}~\Omega$$ 3 $$\frac{16}{3}~\Omega$$ 4 $$\frac{22}{3}~\Omega$$
Subtopic:  Wheatstone Bridge |
89%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A car battery of emf $$12~\text{V}$$ and internal resistance $$5\times 10^{-2}~\Omega$$ receives a current of $$60~\text{A}$$ from an external source. The terminal voltage of the battery is:

 1 $$12~\text{V}$$ 2 $$9~\text{V}$$ 3 $$15~\text{V}$$ 4 $$20~\text{V}$$
Subtopic:  EMF & Terminal Voltage |
51%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

If there are two bulbs of ($$40~\text{W},200~\text{V}$$), and ($$100~\text{W},200~\text{V}$$), then the correct relation for their resistance is:
1. $$R_{40}<R_{100}$$
2. $$R_{40}>R_{100}$$
3. $$R_{40}=R_{100}$$
4. no relation can be predicted

Subtopic:  Heating Effects of Current |
87%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

According to the Faraday Law of electrolysis, the mass deposited at electrode will be proportional to:

1. m ∝ I2

2. m ∝ Q

3. m ∝ Q2

4. 'm' does not depend on Q

Subtopic:  Current & Current Density |
72%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch