Electro Magnetic Induction And Alternating Currents Question 359
Question: The magnetic flux linked with a coil is given by an equation $ \varphi $ (in webers) = $ 8t^{2}+3t+5 $ . The induced e.m.f. in the coil at the fourth second will be [MP PET 1990]
Options:
A) 16 units
B) 39 units
C) 67 units
D) 145 units
Show Answer
Answer:
Correct Answer: C
Solution:
$ e=-\frac{d\varphi }{dt}=-( 16t+3 )=-67units $
