Electromagnetic Induction & Alternating Currents [JEE (Based on NTA Guidelines-IIT Engg.) Mains Physics]: Questions 1 - 4 of 172

Choose Programs:

📹 Video Course 2024 (0 Lectures [0 mins]): Offline Support

Rs. 100.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

🎓 Study Material (575 Notes): 2024-2025 Syllabus

Rs. 650.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 228 Numeric, 4619 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 750.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 1

Question MCQ▾

A square loop of side a is rotating about its diagonal with angular velocity ω in a perpendicular magnetic field as shown in the figure. If the number of turns in it is 10 then the magnetic flux linked with the loop at any instant will be-

A Square Loop of Side a in Magnetic Field

Choices

Choice (4)Response

a.

20Ba2

b.

10Ba2 cos (ωt)

c.

10Ba

d.

10Ba2

Edit

Question 2

Question MCQ▾

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

Edit

Question 3

Question MCQ▾

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

Edit

Question 4

Question MCQ▾

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

Edit