# Current Electricity (NEET Physics): Questions 68 - 72 of 77

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## Question number: 68

» Current Electricity » Potentiometer

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.

6.9 Ω

b.

5.9 Ω

c.

4.9 Ω

d.

7.9 Ω

## Question number: 69

» Current Electricity » Electrical Resistance

MCQ▾

### Question

The current in the given circuit will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 70

» Current Electricity » Electrical Resistance

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.

22%

b.

21%

c.

24%

d.

20%

## Question number: 71

» Current Electricity » Kirchhoff's Laws

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

9 A

b.

3 A

c.

13 A

d.

19 A

## Question number: 72

» Current Electricity » Kirchhoff's Laws

MCQ▾

### Question

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

### Choices

Choice (4) Response

a.

3 A

b.

5 A

c.

d.

-3 A

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