The current through the 5Ω resistor is

                            

(1) 3.2A                     

(2) 2.8A

(3) 0.8A                     

(4) 0.2A

Subtopic:  Kirchoff's Voltage Law |
 68%
From NCERT
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In the figure, a carbon resistor has bands of different colours on its body as mentioned in the figure. The value of the resistance is:

 
1. \(2.2\) k\(\Omega\)
2. \(3.3\) k\(\Omega\)
3. \(5.6\) k\(\Omega\)
4. \(9.1\) k\(\Omega\)

Subtopic:  Colour Coding of Resistors (OLD NCERT) |
 89%
From NCERT
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A copper wire has a square cross-section, 2.0 mm on a side. It carries a current of 8 A and the density of free electrons is 8 × 1028 m–3. The drift speed of electrons is equal to 

(1) 0.156 × 10–3 m.s–1

(2) 0.156 × 10–2 m.s–1

(3) 3.12 × 10–3 m.s–1

(4) 3.12 × 10–2 m.s–1

Subtopic:  Current & Current Density |
 62%
From NCERT
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The equivalent resistance of the following infinite network of resistances is 

(1) Less than 4 Ω

(2) 4 Ω

(3) More than 4 Ω but less than 12 Ω

(4) 12 Ω

Subtopic:  Combination of Resistors |
 67%
From NCERT
AIIMS - 1995
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What is the current (i) in the circuit as shown in figure 

(1) 2 A

(2) 1.2 A

(3) 1 A

(4) 0.5 A

Subtopic:  Combination of Resistors |
 80%
From NCERT
AIIMS - 1998
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In the given figure, the equivalent resistance between the points A and B is :

(1) 8 Ω

(2) 6 Ω

(3) 4 Ω

(4) 2 Ω

Subtopic:  Combination of Resistors |
 94%
From NCERT
AIIMS - 1999
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Effective resistance between A and B is :

(1) 15 Ω

(2) 5 Ω

(3) 52Ω

(4) 20 Ω

Subtopic:  Wheatstone Bridge |
 87%
From NCERT
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In the circuit shown in the figure below, if the potential difference between B and D is zero, then value of the unknown resistance X is:

1. 4 Ω 2. 2 Ω
3. 3 Ω 4. EMF of a cell is required to find the value of X
Subtopic:  Wheatstone Bridge |
 82%
From NCERT
PMT - 1986
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The figure below shows a network of currents. The current \(i\) will be:



1. \(3~\mathrm{A}\)
2. \(13~\mathrm{A}\)
3. \(23~\mathrm{A}\)
4. \(-3~\mathrm{A}\)

Subtopic:  Kirchoff's Current Law |
 85%
From NCERT
PMT - 1995
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The current in the given circuit is 

(1) 0.1 A

(2) 0.2 A

(3) 0.3 A

(4) 0.4 A

Subtopic:  Kirchoff's Voltage Law |
 57%
From NCERT
AIIMS - 2000
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