NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 477 - 481 of 2320

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Question number: 477

» Current Electricity » Electrical Resistance

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MCQ▾

Question

The resultant resistance between the points A and B in the following figure will be –

network circuit of 1Ω and 2Ω resistors

Network Circuit of 1Ω and 2Ω Resistors

Choices

Choice (4)Response

a.

8 Ω

b.

2 Ω

c.

6 Ω

d.

4 Ω

Question number: 478

» Current Electricity » Potentiometer

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MCQ▾

Question

The emf of a standard cell balances across 150 cm length of a wire of potentiometer. When a resistance of 2Ω is connected as a shunt with the cell, the balance point is obtained at 100 cm. The internal resistance of the cell is

Choices

Choice (4)Response

a.

2 Ω

b.

0.5 Ω

c.

0.1 Ω

d.

1 Ω

Question number: 479

» Current Electricity » Potentiometer

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MCQ▾

Question

A potentiometer consists of a wire of length 4 m and resistance 10 Ω. It is connected to cell of emf 2 V. The potential difference per unit length of the wire will be

Choices

Choice (4)Response

a.

5 V/m

b.

2 V/m

c.

10 V/m

d.

0.5 V/m

Question number: 480

» Current Electricity » Wheatstone Bridge

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MCQ▾

Question

In the adjoining network of resistors, each is of resistance r ohm, the equivalent resistance between points A and B is-

Circuit Diagram with five equal resistors

Circuit Diagram with Five Equal Resistors

Choices

Choice (4)Response

a.

b.

r

c.

5r

d.

Question number: 481

» Current Electricity » Color Code for Resistors

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MCQ▾

Question

In the figure a carbon resistor has bands of different colors on its body as mentioned in the figure. The value of the resistance is

Carbon Resistor with four band

Carbon Resistor with Four Band

Choices

Choice (4)Response

a.

2.2 k Ω

b.

5.6 k Ω

c.

9.1 k Ω

d.

3.3 k Ω

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