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

Subtopic:  Kirchoff's Current Law |
 84%
Level 1: 80%+
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 |
 66%
Level 2: 60%+
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 |
 71%
Level 2: 60%+
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 |
 73%
Level 2: 60%+
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 |
 82%
Level 1: 80%+
AIPMT - 2008
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An electric kettle takes \(4~\text{A}\) current at \(220~\text{V}\). How much time will it take to boil \(1\) kg of water at a temperature of \(20^{\circ}\text{C}\)? The temperature of boiling water is \(100^{\circ}\text{C}\).
1. \(6.3\) min 2. \(8.4\) min
3. \(12.6\) min 4. \(4.2\) min
Subtopic:  Heating Effects of Current |
 54%
Level 3: 35%-60%
AIPMT - 2008
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A cell can be balanced against 100 cm and 110 cm of potentiometer wire, respectively with and without being short-circuited through a resistance of 10 Ω. Its internal resistance is:

1.  1.0 Ω

2.  0.5 Ω

3.  2.0 Ω

4.  zero

 74%
Level 2: 60%+
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 |
 88%
Level 1: 80%+
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 |
 82%
Level 1: 80%+
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 |
 55%
Level 3: 35%-60%
AIPMT - 2006
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