An AC generator produces a sinusoidal voltage. Doubling the rotation speed will: A) Double frequency, double peak voltage B) Double frequency only C) Halve frequency, double voltage D) No change
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
State Faraday’s law of electromagnetic induction and explain how Lenz’s law determines the direction of induced current.
A proton (q = 1.6 × 10⁻¹⁹ C, m = 1.67 × 10⁻²⁷ kg) moves at 2.0 × 10⁶ m/s perpendicular to a 0.5 T magnetic field. Calculate the radius of its circular path. Section C – Extended Response (10 marks) Answer in full sentences. Diagrams may help. physics module 6 questions
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
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
50 minutes Total marks: 40
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.
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 horizontal wire of length 0.3 m carries a current of 5.0 A. It is placed in a uniform magnetic field of 0.2 T directed at 30° to the wire. Calculate the magnitude of the magnetic force on the wire. An AC generator produces a sinusoidal voltage
A proton enters a uniform magnetic field directed into the page. If the proton moves upward, the initial magnetic force direction is: A) Up B) Down C) Left D) Right
Practice Examination Paper
A charged particle moves parallel to a magnetic field. The magnetic force on it is: A) Maximum B) Zero C) Dependent on speed only D) Dependent on charge only A proton (q = 1