Physics Module 6 Questions [FRESH]

A wire carries current northward in a magnetic field pointing east. The force on the wire is: A) Up B) Down C) North D) Zero

A step-up transformer has 200 turns on the primary and 800 turns on the secondary. If the primary voltage is 120 V AC, the secondary voltage is: A) 30 V B) 120 V C) 480 V D) 960 V

State Faraday’s law of electromagnetic induction and explain how Lenz’s law determines the direction of induced current. physics module 6 questions

Lenz’s law is a consequence of which conservation principle? A) Conservation of charge B) Conservation of energy C) Conservation of momentum D) Conservation of mass

The right-hand palm rule is used to find: A) Direction of induced current B) Direction of force on a current-carrying conductor in a field C) Direction of magnetic field around a wire D) Polarity of induced EMF Section B – Short Answer (20 marks) Answer in the spaces provided. A wire carries current northward in a magnetic

Explain how an eddy current brake works, referring to Lenz’s law and energy conservation. Include one practical application.

A square coil of side 0.2 m and 50 turns is placed perpendicular to a magnetic field. The field changes uniformly from 0.1 T to 0.5 T in 0.4 s. Calculate: a) The change in magnetic flux through one turn. b) The average induced EMF in the coil. Lenz’s law is a consequence of which conservation

Practice Examination Paper

The magnetic flux through a coil of area 0.5 m² in a uniform 0.2 T field perpendicular to the coil is: A) 0.1 Wb B) 0.4 Wb C) 0.5 Wb D) 1.0 Wb

Faraday’s law of electromagnetic induction states that the induced EMF is proportional to: A) The magnetic field strength B) The rate of change of magnetic flux C) The current in the coil D) The resistance of the circuit