All the cells, shown in the figure below, are of \(2~\text V,\) and all the resistances are \(1~\Omega.\) When a potential difference \(V\) is applied between \(A\) and \(B,\) the current through the circuit doubles compared to the situation when the potential difference is made zero. Then;
1. \(V=2\) volts, positive at \(A.\)
2. \(V=2\) volts, negative at \(A.\)
3. \(V=6\) volts, positive at \(A.\)
4. \(V=6\) volts, negative at \(A.\)
Subtopic:  Kirchoff's Voltage Law |
From NCERT
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The potential difference between the ends of a \(12~\text{V}\) battery when it is being charged by a \(2~\text{A}\) charger is found to be \(13.2~\text{V}\). If this battery is connected in a circuit with a \(6~\Omega\) resistance, the current will be nearly:
1. \(2~\text{A}\) 2. \(1~\text{A}\)
3. \(1.8~\text{A}\) 4. \(2.2~\text{A}\)
Subtopic:  Kirchoff's Voltage Law |
 52%
From NCERT
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The resistance between \(A,B\) is found to be \(500~\Omega\)  while that between \(A,C\) is \(400~\Omega.\) The minimum possible value of \(R_2\) is:
             
1. \(100~\Omega\)
2. \(200~\Omega\)
3. \(400~\Omega\)
4. \(900~\Omega\)
Subtopic:  Kirchoff's Voltage Law |
 54%
From NCERT
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In the circuit shown, current in 5 \(\Omega\) resistor is:
   
1. 1.5 A from Q to P
2. 1.5 A from P to Q
3. 3 A from P to Q
4. No current flows from Q to P
Subtopic:  Kirchoff's Voltage Law |
 69%
From NCERT
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Find the current through the rightmost \(2~\Omega\) resistor.
        
1. \(1~\text{A}\)
2. \(2~\text{A}\)
3. \(0.5 ~\text{A}\)
4. \(0.25~\text{A}\)
Subtopic:  Kirchoff's Voltage Law |
 57%
From NCERT
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