For the circuit shown in the figure, the current \(I\) will be:

 

1. \(0.75~\text{A}\) 2. \(1~\text{A}\)
3. \(1.5~\text{A}\) 4. \(0.5~\text{A}\)

Subtopic:  Grouping of Cells |
 82%
Level 1: 80%+
NEET - 2020
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Two solid conductors are made up of the same material and have the same length and the same resistance. One of them has a circular cross-section of area \(  𝐴 _1\) and the other one has a square cross-section of area \(A_2.\) The ratio of \(𝐴 _1 / 𝐴 _2  \) is:

1. \(1.5\) 2. \(1\)
3. \(0.8\) 4. \(2\)
Subtopic:  Derivation of Ohm's Law |
 83%
Level 1: 80%+
NEET - 2020
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For the circuit given below, Kirchhoff's loop rule for the loop \(BCDEB\) is given by the equation:

         

1. \(-{i}_2 {R}_2+{E}_2-{E}_3+{i}_3{R}_1=0\)
2. \({i}_2{R}_2+{E}_2-{E}_3-{i}_3 {R}_1=0\)
3. \({i}_2 {R}_2+{E}_2+{E}_3+{i}_3 {R}_1=0\)
4. \(-{i}_2 {R}_2+{E}_2+{E}_3+{i}_3{R}_1=0\)
Subtopic:  Kirchoff's Voltage Law |
 71%
Level 2: 60%+
NEET - 2020
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The equivalent resistance between \(A\) and \(B\) for the mesh shown in the figure is:

      

1. \(7.2~\Omega\)  2. \(16~\Omega\) 
3. \(30~\Omega\)  4. \(4.8~\Omega\) 
Subtopic:  Combination of Resistors |
 88%
Level 1: 80%+
NEET - 2020
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A cell having an emf \(\varepsilon\) and internal resistance \(r\) is connected across a variable external resistance \(R\). As the resistance \(R\) is increased, the plot of potential difference \(V\) across \(R\) is given by:

1. 2.
3. 4.
Subtopic:  EMF & Terminal Voltage |
 61%
Level 2: 60%+
AIPMT - 2012
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In the circuit shown in the figure below, if the potential at point \(A\) is taken to be zero, the potential at point \(B\) will be:

             

1. \(+1\) V
2. \(-1\) V
3. \(+2\) V
4. \(-2\) V

Subtopic:  Kirchoff's Voltage Law |
 65%
Level 2: 60%+
AIPMT - 2011
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The net resistance of the circuit between \(A\) and \(B\) is:

1. \(\dfrac{8}{3}~\Omega\) 2. \(\dfrac{14}{3}~\Omega\)
3. \(\dfrac{16}{3}~\Omega\) 4. \(\dfrac{22}{3}~\Omega\)
Subtopic:  Wheatstone Bridge |
 90%
Level 1: 80%+
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 |
 75%
Level 2: 60%+
AIPMT - 2005
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\(5~\text A\) fuse wire can withstand a maximum power of \(1~\text W\) 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 |
 88%
Level 1: 80%+
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 |
 76%
Level 2: 60%+
AIPMT - 2005
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