PhysicsHardHigh School (11–12)Electricity & Magnetism › Magnetic Effects of CurrentBoard ExamAPA-LevelIB
Created by StemPy LabAssertion (A): A simple cyclotron is not used to accelerate electrons to very high energy. Reason (R): As an electron gets near the speed of light its mass grows, so its time for a turn changes and it falls out of step.
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← A long vertical wire in a laboratory carries a current upward. The Earth's magnetic field near it points horizontally towards the north. In which direction is the force on the wire?Protons and deuterons go round circles of the same radius in the same magnetic field. A deuteron has the same charge as a proton and twice the mass. What is the ratio of the kinetic energy of a deuteron to that of a proton? →
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