Faraday’s First Law -Multiple Choice Questions Quiz

Interactive MCQs on “Faraday’s First Law”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What does Faraday's first law state?

(a) The induced electromotive force (EMF) in a circuit is proportional to the rate of change of magnetic field strength.
(b) The induced EMF in a circuit is inversely proportional to the rate of change of magnetic field strength.
(c) The induced EMF in a circuit is independent of the rate of change of magnetic field strength.
(d) The induced EMF in a circuit is zero.

Question 2: What is the SI unit of magnetic field strength?

(a) Ohm
(b) Ampere
(c) Tesla
(d) Coulomb

Question 3: A coil of wire is placed in a magnetic field. If the magnetic field strength is doubled, what will happen to the induced EMF?

(a) It will be halved.
(b) It will be quadrupled.
(c) It will remain the same.
(d) It will be doubled.

Question 4: A circular loop is moved perpendicular to a magnetic field at a constant speed. What will be the polarity of the induced EMF in the loop?

(a) The polarity will remain constant.
(b) The polarity will alternate periodically.
(c) The polarity will depend on the loop's resistance.
(d) The polarity will depend on the loop's radius.

Question 5: In which of the following scenarios will Faraday's first law not apply?

(a) A stationary coil in a constant magnetic field.
(b) A stationary coil in a time-varying magnetic field.
(c) A moving coil in a constant magnetic field.
(d) A moving coil in a time-varying magnetic field.

Question 6: If the number of turns in a coil of wire is increased, what will happen to the induced EMF when the magnetic field changes?

(a) It will decrease.
(b) It will remain the same.
(c) It will increase.
(d) It will become negative.

Question 7: A magnetic field passes through a closed loop of wire, but the loop's area remains constant. What will be the induced EMF?

(a) There will be no induced EMF.
(b) The induced EMF will increase.
(c) The induced EMF will decrease.
(d) The induced EMF will fluctuate randomly.

Question 8: In which direction does the induced current flow in a coil according to Lenz's law?

(a) In the same direction as the change in magnetic field.
(b) In the opposite direction of the change in magnetic field.
(c) Clockwise in the coil.
(d) Anticlockwise in the coil.

Question 9: A conducting loop is rotated in a magnetic field. At what orientation will the induced EMF be maximum?

(a) When the loop's plane is parallel to the magnetic field lines.
(b) When the loop's plane is perpendicular to the magnetic field lines.
(c) When the loop's plane makes a 45-degree angle with the magnetic field lines.
(d) The induced EMF will be the same regardless of the loop's orientation.

Question 10: If a coil is moved into a region of a uniform magnetic field with constant velocity, what will happen to the induced EMF over time?

(a) It will decrease.
(b) It will remain constant.
(c) It will increase.
(d) It will fluctuate randomly.