NEET Physics: Questions 482 - 485 of 2098

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Question number: 482

» Current Electricity » Potentiometer

Assertion-Reason▾

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 but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

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

d.

Ꭺ is false but Ꭱ is true

Question number: 483

» Current Electricity » Kirchhoff's Laws

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 2

c.

2 and 4

d.

1 and 3

Question number: 484

» Current Electricity » Metre Bridge

MCQ▾

Question

In Meter Bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so removed is

Choices

Choice (4) Response

a.

Index error

b.

Random error

c.

Due to temperature effect

d.

End correction

Question number: 485

» Current Electricity » Series and Parallel Combinations of Resistors

MCQ▾

Question

The voltmeter shown in fig, reads 6V across the 60Ω resistors. Then the resistance of the voltmeter is-

diagram with 60Ω and 50Ω resistors, Voltmeter and battery.

Diagram With 60Ω and 50Ω Resistors, Voltmeter and Battery.

Here volt meter connected across the 60Ω resistor and battery and 50Ω resistor connected in series with it.

Choices

Choice (4) Response

a.

0 Ω

b.

200 Ω

c.

300 Ω

d.

∞ Ω

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