The problem is simple, all I have to do is draw a voltage / time graph. The black ring is a conductor, its inner surface area is 0.01 m^2. The magnetic field points upward, B = 4T.
2. The attempt at a solution
I understand what I have to do, but I'm getting the wrong +/- sign. So I would just like a sanity check.
In the first decreasing interval, from t = 2 to t = 6. The flux is decreasing, so the magnetic field produced by the ring should be pointing upwards. Therefore the current in the ring should be counter clockwise.
If the current is counter clockwise, the voltage should be positive on the given voltmeter. However, the voltage in the solution is negative. The problem states that the voltage is positive when electrical potential is larger on the "+" side of the voltmeter.
I think it has something to do with the agreed and the actual direction of electrical current, so someone just please tell me what im thinking wrong.