You and a friend each drive 58 km. You travel at 89. km/h, your friend at 94 km/h. How long will your friend wait for you at the
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Hello!
We can use Faraday's Law of Electromagnetic Induction to solve.
ε = Induced emf (4.08 V)
N = Number of loops (?)
= Magnetic Flux (Wb)
t = time (s)
**Note: The negative sign can be disregarded for this situation. The sign simply shows how the induced emf OPPOSES the current.
Now, we know that is analogous to the change in magnetic flux over change in time, or
, so:
Rearrange the equation to solve for 'N'.
Plug in the given values to solve.
**Rounding up because we cannot have a part of a loop.