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## Homework Statement

Find the magnetic flux through a solenoid of length 31.2 cm, radius 1.5 cm, and 610 turns that carries a current of 3.8 A.

(in Wb)

## Homework Equations

B_solenoid=u

_{0}*N*I/L

Flux= B *A

## The Attempt at a Solution

So to find the magnetic field, I plugged the values into the equation like this: u

_{0}*610*3.8/.312=9.34*10

^{-3}.

And I've tried doing pi*(.015

^{2}) for the area, and multiplying them together, and I didn't get the right answer.

I tried taking the total surface area of the solenoid, such as 2pi(.015)

^{2}* 2pi(.015)*(.312) and I still can't get the answer. What am i missing? I feel like this problem should be really easy...