NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 518 - 521 of 2320

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Question number: 518

» Current Electricity » Electrical Resistance

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MCQ▾

Question

How will reading in the ammeter Switch. A be affected if another identical bulb Q is connected in parallel to P as shown in the figure? The voltage in the mains is maintained at constant value

Circuit with bulbs P and Q, Ammeter and switch

Circuit with Bulbs P and Q, Ammeter and Switch

Choices

Choice (4)Response

a.

The reading will increase four fold.

b.

The reading will not be affected.

c.

The reading will be double of previous one.

d.

The reading will be reduced to one half.

Question number: 519

» Current Electricity » Electric Cell and Its Internal Resistance

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Assertion-Reason▾

Question

Assertion (Ꭺ)

In a simple battery circuit the point of lowest potential is negative terminal of the battery.

Reason (Ꭱ)

The current flows towards the point of the higher potential as it flows in such a circuit from the negative to the positive terminal.

Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are false

Question number: 520

» Current Electricity » Kirchhoff's Laws

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MCQ▾

Question

In the given circuit the current I 1 is

Circuit diagram consist of three resistor and two battery

Circuit Diagram Consist of Three Resistor and Two Battery

Choices

Choice (4)Response

a.

-0.4 A

b.

-0.8 A

c.

0.4 A

d.

0.8 A

Question number: 521

» Current Electricity » Potentiometer

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MCQ▾

Question

In a potentiometer experiment the balancing with a cell is at length 240 cm. On shunting the cell with a resistance of 2 Ω, the balancing length becomes 120 cm. The internal resistance of the cell is

Choices

Choice (4)Response

a.

2 Ω

b.

4 Ω

c.

1 Ω

d.

0.5 Ω

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