Question

Two conducting wires have currents in the direction indicated: The current through the wire on the left is increasing, and the current through the wire on the right is decreasing: Each wire has two loops placed near them Increasing Decreasing Which of the following gives the correct direction, clockwise (CW) or counterclockwise (CCW), of the induced EMF in the loops ABCD? MultipleChoice 1) CCW, CCW, CW, CW 2) CW, CW, CCW, CCW 3) CW, CCW, CW, CCW 4) CCW, CW, CCW, CW'

Answer 1

The correct direction of the induced EMF in the loops ABCD is CCW, CW, CCW, CW.

Step-by-step explanation:

The correct direction of the induced EMF in the loops ABCD can be determined using Lenz's Law. Lenz's Law states that the direction of the induced current in a loop is such that it opposes the change in magnetic flux that is causing the current. In this case:

1. The current through the wire on the left is increasing. This increasing current creates a counterclockwise magnetic field around the wire. According to Lenz's Law, the induced EMF in the loop ABCD will generate a current that creates a magnetic field in the opposite direction, which is clockwise.
2. The current through the wire on the right is decreasing. This decreasing current creates a clockwise magnetic field around the wire. The induced EMF in the loop ABCD will generate a current that creates a magnetic field in the opposite direction, which is counterclockwise.

Therefore, the correct direction of the induced EMF in the loops ABCD is CCW, CW, CCW, CW.

Answer 2

The options that gives the correct direction of the induced EMF in the loops A,B,C,D is option 3:CW, CCW, CW, CCW

By the use of Right-Hand Rule for Induced EMF: If you point your thumb in the direction of the current and your fingers in the direction of the magnetic field, then the direction your fingers curl is the direction of the induced EMF.

Given that the current through the wire on the left is increasing and the current through the wire on the right is decreasing:

Hence:

Loop A: CW (Clockwise)

Loop B: CCW (Counterclockwise)

Loop C: CW (Clockwise)

Loop D: CCW (Counterclockwise)

So, the correct sequence is: CW, CCW, CW, CCW.