Question

9.1.1

9.1.2
9.1.3
9.1.4
9.2.1
State Faraday's Law of Electromagnetic induction in words
Write down the polarity (North pole or South pole) established at
point T as the bar magnet approaches the solenoid.
9.2.2
What will be observed on the galvanometer when the bar magnet
is held stationary inside the solenoid?
Give a reason for the answer.
A magnetic field with a field strength of 0.5 T passes through a conducting
loop of area 10 cm² in such a way that the field lines are at 70° to the plane of
the loop.
What is the direction of the induced current through the
galvanometer? CHOOSE from X to Y or from Y to X.
Calculate the magnetic flux linkage.
Calculate the average emf that will be induced across the ends of
the coil if it is removed from the field in 0,2 s.
A circular coil is placed inside a magnetic field and rotated clockwise to
induce an emf.
How will the following changes influence the magnitude of the induced emf?
Choose from INCREASES, DECREASES or REMAINS THE SAME.
(2)
(3)

Answer 1

Faraday's Law of Electromagnetic induction states that the induced emf in a circuit is directly proportional to the rate of change of magnetic flux through the circuit. The polarity at point T as the bar magnet approaches the solenoid depends on the orientation of the magnet and solenoid. No current is induced in the coil and the galvanometer does not register any deflection when the bar magnet is held stationary inside the solenoid.

Step-by-step explanation:

Faraday's Law of Electromagnetic induction states that the induced electromotive force (emf) in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.

As the bar magnet approaches the solenoid, the polarity at point T will depend on the specific orientation of the magnet and solenoid. If the approaching north pole of the magnet is parallel to the solenoid, the induced polarity will be south at point T. If the south pole is parallel, the induced polarity will be north at point T.

When the bar magnet is held stationary inside the solenoid, no change in magnetic flux occurs, so there will be no induced current in the coil. As a result, the galvanometer will not register any deflection.

Learn more about Electromagnetic induction