# 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
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Two batteries, one of emf $$18$$ volts and internal resistance $$2~\Omega$$ and the other of emf $$12$$ V and internal resistance $$1~\Omega,$$ are connected as shown. The voltmeter $$\mathrm{V}$$ will record a reading of:

1. $$18$$ V
2. $$30$$ V
3. $$14$$ V
4. $$15$$ V

Subtopic:  Grouping of Cells |
72%
From NCERT
AIPMT - 2005
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A $$5\text-$$ampere fuse wire can withstand a maximum power of $$1$$ watt in a circuit. The resistance of the fuse wire is:

 1 $$5~\Omega$$ 2 $$0.04~\Omega$$ 3 $$0.2~\Omega$$ 4 $$0.4~\Omega$$
Subtopic:  Heating Effects of Current |
87%
From NCERT
AIPMT - 2005
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When a wire of uniform cross-section a, length l, and resistance R is bent into a complete circle, the resistance between any two diametrically opposite points will be:

1. R/2

2. R/4

3. R/8

4. 4R

Subtopic:  Combination of Resistors |
71%
From NCERT
AIPMT - 2005
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For the network shown in the figure below, the value of the current $$i$$ is:

1. $$\frac{18V}{5}$$
2. $$\frac{5V}{9}$$
3. $$\frac{9V}{35}$$
4. $$\frac{5V}{18}$$

Subtopic:  Wheatstone Bridge |
74%
From NCERT
AIPMT - 2005
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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
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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
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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
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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
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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
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