In the second coil, we go from no flux to a magnetic field pointing the left. The induced current must produce field lines pointing to the right. Find the current through each resistor and the potential difference across each resistor. Now we can determine the current drawn from the battery You can use this to find the voltage across the 2.86 Ohm equivalent combination. Find the magnitude and direction of the magnetic field at a point 0.5 m to the right of wire 2.
Magnetic field obey the principle of superposition.
To find the magnetic field at a point 0.5 m to the right of wire two, find the magnetic fields due to each of the two wires and add them up as vectors. From the right hand rule, the direction of the magnetic field due to either wire is into the page in the region to the right of wire 2. A rectangular loop of wire is placed a distance of 0.2 m away from a wire carrying a current of 12 A as shown in the diagram below. To find the flux through the loop The induced emf is determined by the changing flux which is determined by how the area changes which is determined by how fast b changes. Two 10- resistors are connected in parallel and connected in series to a 50 mH inductor.