NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 522 - 527 of 2320

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Question number: 522

» Current Electricity » Series and Parallel Combinations of Resistors

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MCQ▾

Question

Twelve wires of equal length and same cross-section are connected in the form of a cube. If the resistance of each of the wires is R, then the effective resistance between the two diagonal ends would be

Cube made by twelve wires of equal and same cross-section area.

Cube Made by Twelve Wires of Equal and Same Cross-Section Area

Choices

Choice (4)Response

a.

R

b.

8 R

c.

2 R

d.

12 R

Question number: 523

» Current Electricity » Potentiometer

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MCQ▾

Question

A Potentiometer wire of length 1 m is connected in series with 490 Ω resistance and 2V battery. If 0.2mV/cm is the potential gradient, then resistance of the potentiometer wire is

Choices

Choice (4)Response

a.

5.9 Ω

b.

7.9 Ω

c.

6.9 Ω

d.

4.9 Ω

Question number: 524

» Current Electricity » Electrical Resistance

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MCQ▾

Question

The current in the given circuit will be

Circuit Diagram with equal 30Ω resistance

Circuit Diagram with Equal 30Ω Resistance

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 525

» Current Electricity » Electrical Resistance

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MCQ▾

Question

A cylindrical wire is stretched to increase its length by 10%. The percentage increase in the resistance of the wire will be

Choices

Choice (4)Response

a.

20%

b.

21%

c.

24%

d.

22%

Question number: 526

» Current Electricity » Kirchhoff's Laws

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MCQ▾

Question

The figure shows a network of currents. The magnitude of currents is shown here. The current/will be

Network of abcd of a circuit

Network of Abcd of a Circuit

Choices

Choice (4)Response

a.

3 A

b.

9 A

c.

13 A

d.

19 A

Question number: 527

» Current Electricity » Kirchhoff's Laws

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MCQ▾

Question

Consider the circuit as shown in the figure. The value of current I, is

Circuit diagram consist of three battery and two resistor

Circuit Diagram Consist of Three Battery and Two Resistor

Choices

Choice (4)Response

a.

b.

5 A

c.

-3 A

d.

3 A

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