To calculate the flux, you first need to know the magnetic field at a distance r from the wire. This is given by:

B(r,t) = mu_{0} I(t)/(2 pi r)

The direction of the magnetic field is according to the right hand rule; if your thumb points in the direction of the current then your fingers point in the way the magnetic field points to. So for positive I, B points into the paper where you've drawn the loop.

The flux is given by the integral of B(r,t) over the surface of the loop. You need to define the sign of the flux by choosing a direction for the outward ...

Consider a bar magnet and a loop of wire. We will examine the interactions of these two objects and the resulting inducedEMF. Which of the following statements are true about this case?
-if the bar magnet is moved through the loop (North pole first), there will be an inducedEMF in the loop
-if the bar magnet is moved

Which of the following statements are true about magnetic flux and inducedEMF?
1) in order to make an inducedEMF, the magnetic flux must be weak
2) in order to make an inducedEMF, the magnetic flux must be static (steady)
3) the inducedEMF has nothing to do with how fast the magnetic flux is changing through the

Consider a loop of wire in a uniform magnetic field. The field is perpendicular to the plane of the loop, such that the magnetic field lines pass through the loop. We will examine the interactions of the loop with the B field and the resulting inducedEMF. Which of the following statements are true about this case?
(1) if t

An emf is induced in a conducting loop of wire 1.24 m long as its shape is changed from square to circular. Calculate the average magnitude of the inducedemf if the change in shape occurs in 4.03s, and the local 0.109 T magnetic field is perpendicular to the plane of the loop.
Please solve and explain problem.

I need help answering this question:
A circular loop lies in the xy-plane and has a radius of 0.10 m and a resistance of 10 ohms.
Given that B=0.20Tsin(1000t/s)k, determine the current flowing through the loop as a function of time.

A triple turn planar loop of wire has a cross-sectional area of 150 cm^2. The plane of the loop is perpendicular to a magnetic field that increases uniformly in magnitude from 4T to 10T in 30 sec. What is the resulting inducedemf and current if the loop has a total resistance of 50 Ohm?

A loop of wire is lying flat on a tabletop. A uniform magnetic field is directed vertically UPWARDS such that it is perpendicular to the tabletop (and the loop). Beyond the edge of the table, the magnetic field is zero. Imagine that you are looking DOWN on the loop from above. Which of the following statements are true about the

A circular loop of flexible iron wire has an initial circumference of 163cm, but its circumference is shrinking at a constant rate of 11.0 cm/s due to tangential pull on the wire. The loop is in a constant uniform magnetic field of magnitude 1.00T, which is oriented perpendicular to the plane of the loop. Assume that you are fac

A circular loop in the plane of the screen lies in a 0.89 T magnetic field pointing into the screen. The loop's diameter changes from 19.0 cm to 6.0 cm in 0.50 s.
What is the magnitude of the average inducedemf?
mV
If the coil resistance is 2.5 , what is the average induced current?
mA