# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 549 - 552 of 2320

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## Question number: 549

Edit
MCQ▾

### Question

A loop of wire is placed in a magnetic field B = 0.02i T. Then the flux through the loop if its area vector is

### Choices

Choice (4)Response

a.

32 μ Wb

b.

138 μ Wb

c.

46 μ Wb

d.

60 μ Wb

## Question number: 550

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

If two long wires, hanging freely are connected to a battery in series, they come closer to each other.

### Reason (Ꭱ)

Force of repulsion acts between the two wires carrying current.

### Choices

Choice (4)Response

a.

Ꭺ is false but Ꭱ is true

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 true but Ꭱ is false

## Question number: 551

Edit
MCQ▾

### Question

The distance between the ends of wings of an airplane is 3m. This airplane is descending down with a speed of 300 km/hour. If the horizontal component of earth’s magnetic field is 0.4 gauss then the value of e. m. f. induced in the wings of the plane will be –

### Choices

Choice (4)Response

a.

0.1 V

b.

1 V

c.

2 V

d.

0.01 V

## Question number: 552

Edit
MCQ▾

### Question

Two identical coaxial circular loops carry current i each circulating in the clockwise direction. If the loops are approaching each other, then

### Choices

Choice (4)Response

a.

Current in each loop increases

b.

Current in each loop remains the same

c.

Current in each loop decreases

d.

Current in one-loop increases and in the other it decreases

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