NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 513 - 517 of 2320

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Question number: 513

» Current Electricity » Resistances of Different Materials

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MCQ▾

Question

A heater coil connected to a supply of a 220 F is dissipating some power P 1 . The coil is cut into half and the two halves are connected in parallel. The heater now dissipates a power P 2. The ratio of power P 1 : P 2 is

Choices

Choice (4)Response

a.

4: 1

b.

1: 2

c.

2: 1

d.

1: 4

Question number: 514

» Current Electricity » Wheatstone Bridge

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MCQ▾

Question

In the circuit shown in the figure, the current flowing in 2Ω, resistance

Bridge circuit consists of four resistors and a galvanometer.

Bridge Circuit Consists of Four Resistors and a Galvanometer

Choices

Choice (4)Response

a.

1.4A

b.

0.4 A

c.

1.0A

d.

1.2 A

Question number: 515

» Current Electricity » Wheatstone Bridge

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MCQ▾

Question

In the figure, the equivalent resistance between A and B is-

Circuit diagram with eight equal resistors R

Circuit Diagram with Eight Equal Resistors R

Choices

Choice (4)Response

a.

3R

b.

c.

d.

R

Question number: 516

» Current Electricity » Potentiometer

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MCQ▾

Question

A potentiometer has uniform potential gradient. The specific resistance of the material of the potentiometer wire is 10 -7 ohm-meter and the current passing through it is 0.1 ampere; cross-section of the wire is 10 -6 m 2. The potential gradient along the potentiometer wire is

Choices

Choice (4)Response

a.

10 -2 V/m

b.

10 -6 V/m

c.

10 -8 V/m

d.

10 -4 V/m

Question number: 517

» Current Electricity » Potentiometer

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MCQ▾

Question

The arrangement as shown in figure is called as

Circuit diagram consist of potentiometer, battery and a key

Circuit Diagram Consist of Potentiometer, Battery and a Key

Choices

Choice (4)Response

a.

Potential adder

b.

Potential subtracted

c.

Potential multiplier

d.

Potential divider

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