The Magnetic Flux Through a Loop Is Made to Vary $\phi$

question 29

Multiple Choice

The magnetic flux through a loop is made to vary according to the relation
$\phi$ _m = 6t² + 7t + 1
Where the units are SI. The EMF induced in the loop when t = 2 s is

• A) 38 V
• B) 39 V
• C) 40 V
• D) 31 V
• E) 19 V

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