Given below two statements:

Statement I: Kirchhoff’s junction law follows the conservation of charge. 
Statement II: Kirchhoff’s loop law follows the conservation of energy.

1. Both Statement I and Statement II are wrong.
2. Statement I is correct but Statement II is wrong.
3. Statement I is wrong and Statement II is correct.
4. Both Statement I and Statement II are correct.

Subtopic:  Kirchoff's Voltage Law |
 82%
From NCERT
AIPMT - 2010
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A wire of resistance \(12~ \Omega \text{m}^{-1}\) is bent to form a complete circle of radius \(10~\text{cm}\). The resistance between its two diametrically opposite points, \(A\) and \(B\) as shown in the figure, is:
        
1. \(0.6\pi~\Omega\)
2. \(3\pi ~\Omega\)
3. \(61 \pi~ \Omega\)
4. \(6\pi~\Omega\)

Subtopic:  Combination of Resistors |
 65%
From NCERT
AIPMT - 2009
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A student measures the terminal potential difference \(V\) of a cell (of emf \( E\) and internal resistance \(R\)) as a function of the current \(I\) flowing through it. The slope and intercept of the graph between \(V\) and \(I\), respectively, is equal to:
1. \(E\) and \(-r\)
2. \(-r\) and \(E\)
3. \(r\) and \(-E\)
4. \(-E\) and \(r\)
Subtopic:  EMF & Terminal Voltage |
 68%
From NCERT
AIPMT - 2009
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See the electrical circuit shown in this figure. Which of the following is a correct equation for it?
                                  

1. \(\varepsilon_1-(i_1+i_2)R-i_1r_1=0\)
2. \(\varepsilon_2-i_2r_2-\varepsilon_1-i_1r_1=0\)
3. \(-\varepsilon_2-(i_1+i_2)R+i_2r_2=0\)
4. \(\varepsilon_1-(i_1+i_2)R+i_1r_1=0\)

Subtopic:  Kirchoff's Voltage Law |
 71%
From NCERT
AIPMT - 2009
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A current of \(3~\text{A}\) flows through the \(2~\Omega\) resistor shown in the circuit. The power dissipated in the \(5~\Omega\) resistor is:
    

1. \(4~\text{W}\) 2. \(2~\text{W}\)
3. \(1~\text{W}\) 4. \(5~\text{W}\)
Subtopic:  Heating Effects of Current |
 80%
From NCERT
AIPMT - 2008
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An electric kettle takes 4 A current at 220 V. How much time will it take to boil 1 kg of water at a temperature of 20 °C? The temperature of boiling water is 100 °C.
1. 6.3 min
2. 8.4 min
3. 12.6 min
4. 4.2 min
Subtopic:  Heating Effects of Current |
 51%
From NCERT
AIPMT - 2008
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The total power dissipated in watts in the circuit shown below is:

1. 16 W 2. 40 W
3. 54 W 4. 4 W
Subtopic:  Heating Effects of Current |
 87%
From NCERT
AIPMT - 2007
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Three resistances \(\mathrm P\), \(\mathrm Q\), and \(\mathrm R\), each of \(2~\Omega\) and an unknown resistance \(\mathrm{S}\) form the four arms of a Wheatstone bridge circuit. When the resistance of \(6~\Omega\) is connected in parallel to \(\mathrm{S}\), the bridge gets balanced. What is the value of \(\mathrm{S}\)?
1. \(2~\Omega\)
2. \(3~\Omega\)
3. \(6~\Omega\)
4. \(1~\Omega\)

Subtopic:  Wheatstone Bridge |
 81%
From NCERT
AIPMT - 2007
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In the circuit shown below, if a conducting wire is connected between points \(A\) and \(B\), the current in this wire will: (All resistances are given in ohms)
         
1. flow from \(A\) to \(B\)
2. flow in the direction which will be
decided by the value of \(V\)
3. be zero
4. flow from \(B\) to \(A\)
Subtopic:  Kirchoff's Voltage Law |
 53%
From NCERT
AIPMT - 2006
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The power dissipated across the 8 Ω resistor in the circuit shown here is 2 W. The power dissipated in watts across the 3 Ω resistor is:


1. 2.0 2. 1.0
3. 0.5 4. 3.0
Subtopic:  Heating Effects of Current |
 69%
From NCERT
AIPMT - 2006
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