Practicing Success
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A coil in the form of a circle of radius r has EMF of ε. What can you say about the EMF if the coil is now changed to a square? |
ε/4π επ/4 ε/2π επ/2 |
επ/4 |
Hint : Length of the coil remains the same. 2πr = 4a ; a : side of the square a = \(\frac{πr}{2}\) a2 = (\(\frac{πr}{2}\) )2
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