NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 482 - 484 of 2320

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Question number: 482

» Current Electricity » Electric Cell and Its Internal Resistance

Edit
MCQ▾

Question

A micro-ammeter has a resistance of 100Ω and a full scale range of 50 μA. It can be used as a voltmeter or a higher range ammeter provided a resistance is added to it Pick the correct range and resistance combination

(1) 10V range with 200 k Ω resistance in series.

(2) 50V range with 10 k Ω resistance in series.

(3) 5 mA range with 1 Ω resistance in parallel.

(4) 10 mA range with 1 k Ω resistance in parallel.

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

Choices

Choice (4)Response

a.

1,2 and 3

b.

1 and 2

c.

2 and 4

d.

1 and 3

Question number: 483

» Current Electricity » Potentiometer

Edit
Assertion-Reason▾

Question

Assertion (Ꭺ)

The emf of the driver cell in the potentiometer experiment should be greater than the emf of the cell to be determined.

Reason (Ꭱ)

The fall of potential across the potentiometer wire should not be less than the emf of the cell to be determined.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

Question number: 484

» Current Electricity » Kirchhoff's Laws

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MCQ▾

Question

Kirchhoff’s laws are based on conservation of

  1. Charge
  2. potential
  3. Energy
  4. Mass

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

Choices

Choice (4)Response

a.

1,2 and 3

b.

1 and 3

c.

2 and 4

d.

1 and 2

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