NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 508 - 512 of 2320

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Question number: 508

» Current Electricity » Electrical Resistance

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MCQ▾

Question

The equivalent resistance of the following infinite network of resistance is

Network of equal resistance 2Ω

Network of Equal Resistance 2&Omega

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

Question number: 509

» Current Electricity » Wheatstone Bridge

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MCQ▾

Question

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

Block Diagram of Post Office Box

Choices

Choice (4)Response

a.

A and D

b.

C and D

c.

B and C

d.

B 1 and C 1

Question number: 510

» Current Electricity » Metre Bridge

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MCQ▾

Question

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

Question number: 511

» Current Electricity » Potentiometer

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MCQ▾

Question

In given figure, the potentiometer wire AB has a resistance of 5 Ω and length 10 m. What is the balancing length AM for the emf of 0.4 V?

Circuit diagram of potentiometer with balance point M

Circuit Diagram of Potentiometer with Balance Point M

Choices

Choice (4)Response

a.

4 m

b.

8 m

c.

0.4 m

d.

0.8 m

Question number: 512

» Current Electricity » Series and Parallel Combinations of Resistors

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MCQ▾

Question

How can we convert the galvanometer of and current into Ammeter with maximum range of 6A.

Choices

Choice (4)Response

a.

By adding a resistance 6mΩ . in parallel with the galvanometer

b.

By adding a resistance 2.5mΩ in series with the galvanometer

c.

By adding a resistance 2.5mΩ in parallel with the galvanometer

d.

By adding a resistance 6mΩ in series with the galvanometer

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