A bar magnet falls through a loop of wire with the north pole entering first. As the north pole enters the wire, the induced current will be (as viewed from above)Group of answer choicesto top of loop.clockwise.counterclockwise.zero.

A circular coil lies flat on a horizontal table. A bar magnet is held above its centre with its north pole pointing down. The stationary magnet induces (when viewed from above)Group of answer choicesno current in the coil.a clockwise current in the coil.a counterclockwise current in the coil.a current whose direction cannot be determined from the information given.

The direction of the magnetic field lines outside a bar magnet is:Options:A) From south pole to north poleB) From north pole to south poleC) Circular around the magnetD) From center to the poles

Finally, the switch on the electromagnet is reopened. The magnitude of the external magnetic flux through the wire loop ______ (A. increases, B. decreases, C. remains constant), and there is _______ (A. zero, B. a clockwise, C. a counterclockwise) current induced in the loop (as seen from the left).Enter the letters corresponding to the responses that correctly complete the statement above. For example, if the correct answers are A and C, type A,C

Which of the following law is used to determine the direction of the induced current in a loop of wire placed in a changing magnetic field?(1 Point)Ampere's lawGauss’s lawFaraday’s lawLenz’s law

In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. Note, an electromagnet is a solenoid with a magnetic material inside its core. In this case, the magnetic material is iron, whose magnetic polarization amplifies the external magnetic field produced by the solenoid.You will need to use the right-hand rule to find the direction of the induced current.