Free Test Faraday’s law – NEET

Q1: Which of the following statements is correct according to Faraday's first law of electromagnetic induction?

A. A changing magnetic field produces an electric current B. An electric field always induces a magnetic field C. The electric current opposes the magnetic flux D. Constant magnetic field induces emf

Q2: Faraday's second law of electromagnetic induction states that the induced emf is:

A. Inversely proportional to time B. Directly proportional to rate of change of magnetic flux C. Independent of flux D. Constant for all materials

Q3: Which quantity changes to produce induced emf according to Faraday’s law?

A. Magnetic field strength B. Magnetic flux C. Area of the coil D. Resistance of the wire

Q4: A coil of 100 turns experiences a change in magnetic flux of 0.02 Wb in 0.1 s. The induced emf is:

A. 0.2 V B. 20 V C. 2 V D. 200 V

Q5: In Faraday's experiment, what is observed when a magnet is moved relative to a coil?

A. Resistance increases B. No current flows C. An emf is induced D. The coil heats up

Q6: What determines the direction of induced current?

A. Faraday’s law B. Kirchhoff’s law C. Lenz’s law D. Ohm’s law

Q7: The induced current always opposes the change in magnetic flux. This is stated by:

A. Faraday’s law B. Kirchhoff’s rule C. Lenz’s law D. Maxwell’s law

Q8: If the number of turns in a coil is doubled, induced emf will:

A. Double B. Be halved C. Become zero D. Remain same

Q9: The induced emf in a closed circuit is given by:

A. Faraday’s law of electrolysis B. Faraday’s law of electromagnetic induction C. Coulomb’s law D. Gauss’s law

Q10: What is the relation for induced emf?

A. ΔΦ/Δt B. N × ΔΦ C. N × (ΔΦ/Δt) D. N/ΔΦ

Q11: A galvanometer connected to a coil shows deflection when:

A. The coil is moved in uniform magnetic field B. A magnet is moved toward the coil C. A resistor is added in series D. The coil is heated

Q12: Which of these does NOT affect the magnitude of induced emf?

A. Number of turns B. Rate of change of flux C. Resistance of wire D. Strength of magnetic field

Q13: What type of emf is induced in a coil rotating in a uniform magnetic field?

A. Constant emf B. Alternating emf C. No emf D. Direct emf

Q14: The emf induced in a loop is maximum when:

A. Loop is parallel to magnetic field B. Loop is perpendicular to magnetic field C. Loop rotates uniformly D. Loop is stationary

Q15: A faster motion of magnet near a coil will:

A. Produce stronger emf B. Produce weaker emf C. Have no effect D. Produce zero emf

Q16: An emf is induced in a loop by:

A. Placing a magnet inside the loop B. Keeping the loop stationary in a magnetic field C. Changing magnetic field in the loop D. Heating the loop

Q17: Faraday’s experiment showed that emf is not induced when:

A. Magnet is moved B. Coil is rotated C. Magnet and coil are stationary D. Magnet vibrates

Q18: Which law supports conservation of energy in electromagnetic induction?

A. Lenz’s law B. Faraday’s law C. Coulomb’s law D. Ohm’s law

Quiz for Faraday’s law