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CBSE Class 12-science Answered

A coil of mean area 500 sq cm and having 1000 turns is hled perpendicular to uniform magnetic field of 0.4 gauss. The coil is turned through 180 degrees in 1/10 second. calculate the average induced emf.
Asked by Dhanashree Deshpande | 20 Nov, 2013, 03:56: PM
answered-by-expert Expert Answer
Given that,
 
Area of the coil A = 500 m/sec2
No. of turns in the coil N = 1000
Magnetic field B = 0.4 G
 
Magnetic flux through area A is given by,
 
 
 
Here, when the coil is perpendicular to the magnetic field,
 
When the coil is turned through 180º,
 
Answered by Komal Parmar | 20 Nov, 2013, 06:28: PM
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