Electromagnetic Induction & Alternating CurrentsFaraday's Law (NEET Physics): Questions 4  7 of 8
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 4
» Electromagnetic Induction & Alternating Currents » Faraday's Law
Question
An airplane having a distance of 50 meter between the edges of its wings is flying horizontally with a speed of 360km/hour. If the vertical component of earth’s magnetic field is 4 x 10 ^{4} weber/m ^{2}, then the induced emf between the edges of its wings will be 
Choices
Choice (4)  Response  

a.  2 V 

b.  0.2 V 

c.  2 mV 

d.  20 V 

Question number: 5
» Electromagnetic Induction & Alternating Currents » Faraday's Law
Question
The magnetic flux passing perpendicular to the plane of the coil and directed into the paper is varying according to the relation , where is in milliweber and t is in second. Then the magnitude of emf induced in the loop when t = 2 second is
Choices
Choice (4)  Response  

a.  19 mV 

b.  31 mV 

c.  14 mV 

d.  6 mV 

Question number: 6
» Electromagnetic Induction & Alternating Currents » Faraday's Law
Question
A rectangular coil of size 10 cm x 20 cm has 60 turns. It is rotating about one of its diagonals in magnetic field 0.5 Wb/m ^{2} with a rate of 1800 revolution per minute. The induced e. m. f. in the coil can be,
(1) 111 V (2) 112 V
(3) 113 V (4) 114 V
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  2 and 4 are correct 

b.  1 and 3 are correct 

c.  1, 2 and 3 are correct 

d.  1 and 2 are correct 

Question number: 7
» Electromagnetic Induction & Alternating Currents » Faraday's Law
Question
A copper disc of radius 0.1 m rotates about its center with 10 revolution per second in a uniform magnetic field of 0.1 T. The emf induced across the radius of the disc is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

