NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics: Questions 506 - 509 of 5119

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Question 506

Question MCQ▾

Which is correct statements?

(1) The Wheatstone bridge is most sensitive when all the four resistances are of the same order

(2) Kirchhoff՚s first law (for currents meeting at a junction in an electric circuit) expresses the conservation of charge.

(3) The rheostat can be used as a potential divider.

(4) In a balanced Wheatstone bridge, interchanging the positions of galvanometer and cell affects the balance of the bridge.

Select the correct answers and mark it according to the following codes:

Choices

Choice (4)Response

a.

1 and 3

b.

1,2 and 3

c.

1 and 2

d.

2 and 4

Edit

Question 507

Question MCQ▾

The equivalent resistance of the following infinite network of resistance is

Network of Equal Resistance 2Ω

Choices

Choice (4)Response

a.

More than 4 Ω but less than 12 Ω

b.

4 Ω

c.

12 Ω

d.

Less than 4 Ω

Edit

Question 508

Question MCQ▾

For the post office box arrangement to determine the value of unknown resistance the unknown resistance should be connected between

Block Diagram of Post Office Box

Choices

Choice (4)Response

a.

A and D

b.

C and D

c.

B and C

d.

B1 and C1

Edit

Question 509

Question MCQ▾

Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by

Choices

Choice (4)Response

a.

50 cm

b.

25 cm

c.

66.67 cm

d.

33.3 cm

Edit