Wheatstone Bridge Absorb Before You Solve MCQs Current Electricity Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

A Wheatstone bridge is used to determine the value of unknown resistance

X

$X$ by adjusting the variable resistance

Y

$Y$ as shown in the figure. For the most precise measurement of

X

$X$ , the resistances

P

$P$ and

Q

$Q$ :

1.	do not play any significant role.
2.	should be approximately equal to $2X$ .
3.	should be approximately equal and are small.
4.	should be very large and unequal.

Subtopic: Wheatstone Bridge |

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1

2

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4

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Q2:

In the Wheatstone Bridge arrangement shown, the resistance

P

$P$ is

2 Ω .

$2~ \Omega.$ The bridge is initially balanced. If P and Q are interchanged: an amount equal to

S

$S$ has to be added to

R

$R$ to restore the balance. The resistance

Q

$Q$ equals (nearly):

1.

2 Ω

$2 ~\Omega$
2.

3.2 Ω

$3.2 ~\Omega$
3.

4 Ω

$4 ~\Omega$
4.

6.4 Ω

$6.4 ~\Omega$

Subtopic: Wheatstone Bridge |

From NCERT

1

2

3

4

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Q3:

In a Wheatstone Bridge arrangement, as shown in the figure, the bridge is balanced. However, when the resistances in the arms

P, Q

$P,Q$ are switched, the bridge is balanced only when

R

$R$ is replaced by

4 R

$4R$ in the other two arms. If the value of

R

$R$ is

100

$100$

Ω

$\Omega$ , that of

S

$S$ is:

1.	$100~\Omega$	2.	$50~\Omega$
3.	$200~\Omega$	4.	$400~\Omega$

Subtopic: Wheatstone Bridge |

56%

From NCERT

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2

3

4

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NEET 2021 - Achiever Batch - Aryan Raj Singh

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To view explanation, please take trial in the course.

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