Voltage induced by changing field

[Cyan Ray]

5. A wire is formed into a 30 turn loop whose diameter is 14 cm and the resistance of the loop is 4 ohmns. The loop is placed on this page and a magnetic is going directly into the plane of the paper and is varying according to the formula
B(t) = 4t^3 - 9t^2 + 3t - 28

Part (a): What is the voltage across the loop at t = 2s?
Part (b): What is the current in the loop at this time?
Part (c): What is the direction of the induced current? Explain
Here is my solution

 

[Cyan Ray]

Is this right?

And as for c) I have no explanation...what is an approriate explanation?

 

[berkeman]

And as for c) I have no explanation...what is an approriate explanation?

Is the flux increasing or decreasing at t = 2s?