The net resistance of the circuit between \(A\) and \(B\) is:

   

1. \(\frac{8}{3}~\Omega\) 2. \(\frac{14}{3}~\Omega\)
3. \(\frac{16}{3}~\Omega\) 4. \(\frac{22}{3}~\Omega\)
Subtopic:  Wheatstone Bridge |
 89%
From NCERT
AIPMT - 2000
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What is the equivalent resistance between points \(a\) and \(b\), if the value of each resistance is \(R\)?

       

1. \(7R\) 2. \(5R\)
3. \(4R\) 4. \(3R\)
Subtopic:  Wheatstone Bridge |
 88%
From NCERT
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In the circuit shown in the figure below, the current supplied by the battery is:

                                     
1. \(2\) A
2. \(1\) A
3. \(0.5\) A
4. \(0.4\) A

Subtopic:  Wheatstone Bridge |
 88%
From NCERT
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In a Wheatstone bridge, all four arms have equal resistance \(R.\) If the resistance of the galvanometer arm is also \(R,\) the equivalent resistance of the combination is:

1. \(R/4\) 2. \(R/2\)
3. \(R\) 4. \(2R\)
Subtopic:  Wheatstone Bridge |
 85%
From NCERT
AIPMT - 2003
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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. \(4~\Omega\) 2. \(2~\Omega\)
3. \(3~\Omega\) 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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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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Figure \((a)\) below shows a Wheatstone bridge in which \(P,Q,R,S\) are fixed resistances, \(G\) is a galvanometer, and \(B\) is a battery. For this particular case, the galvanometer shows zero deflection. Now, only the positions of \(B\) and \(G\) are interchanged. as shown in figure \((b).\) The new deflection of the galvanometer:

            

1. is to the left
2. is to the right
3. is zero
4. depends on the values of \(P,Q,R,S\)
Subtopic:  Wheatstone Bridge |
 78%
From NCERT
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The resistances of the four arms \(P,Q,R~\text{and}~S\) in a Wheatstone’s bridge are \(10~\Omega,30~\Omega,30~\Omega\) and \(90~\Omega\) respectively. The emf and internal resistance of the cell are \(7~\text{volt}\) and \(5~\Omega\) respectively. If the galvanometer resistance is \(50~\Omega\) the current drawn from the cell will be:
1. \(0.2~\text{A}\)
2. \(0.1~\text{A}\)
3. \(2.0~\text{A}\)
4. \(1.0~\text{A}\)
 
 
Subtopic:  Wheatstone Bridge |
 76%
From NCERT
AIPMT - 2013
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In the figure shown, each resistor has resistance \(R.\) Match Column I and Column II.
                               
Column I Column II
(A) Equivalent resistance between \(a\) and \(b\) (P) \(\dfrac{R}{2}\)
(B) Equivalent resistance between \(a\) and \(c\) (Q) \(\dfrac{5R}{8}\)
(C) Equivalent resistance between \(b\) and \(d\) (R) \(R\)
 
1. A → P, B → Q, C → R
2. A → Q, B → P, C → R
3. A → R, B → P, C → Q
4. A → R, B → Q, C → P
Subtopic:  Wheatstone Bridge |
 74%
From NCERT
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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 |
 73%
From NCERT
AIPMT - 2005
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