An electron gun is used to produce a narrow beam of electrons which enters a region of uniform magnetic field. The electrons follow a circular path in this magnetic field.
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An electron gun is used to produce a narrow beam of electrons which enters a region of uniform magnetic field. The electrons follow a circular path in this magnetic field.
The Moon orbits the Earth at an average distance of . The mass of the Earth is and .
A coil of wire with turns is placed in a region where the magnetic flux through the coil changes uniformly from to in .
In a laboratory experiment, singly ionized calcium ions (Ca⁺) of mass and charge are accelerated through a potential difference of 5.0 kV before entering a uniform magnetic field of strength . The magnetic field is perpendicular to the velocity of the ions.
Which of the following correctly describes the force acting between two point masses due to gravity?
Practice IB Physics Topic Topic D - Fields with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Topic D - Fields and mirrors Paper 1A, 1B, 2 style where relevant.
Get instant solutions, detailed explanations, and build confidence with questions aligned to IB examiner expectations.
the direction of the gravitational field produced by the Earth.
the gravitational field strength at the Moon’s orbit due to the Earth.
why the Moon remains in orbit despite this weak field.
Faraday’s law of electromagnetic induction.
the magnitude of the average induced emf in the coil.
how Lenz’s law determines the direction of the induced emf.
the final speed of the calcium ions after acceleration.
the radius of the path followed by the ions in the magnetic field.