A researcher is designing a linear particle accelerator to accelerate protons for use in a nuclear physics experiment. The accelerator consists of a series of cylindrical electrodes with a potential difference applied between adjacent electrodes. Protons are injected into the accelerator with an initial velocity close to zero. The potential difference between each electrode is maintained at a constant \$2.0 imes 10^5 ext{ V}$. Assume that the electric field is uniform within the gaps between the electrodes and negligible inside the electrodes.
b. Calculate the magnitude of the electric force on a proton as it passes through the gap between two electrodes where the gap distance is 5.0 cm.
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Create Free Account Log inThis is a free VCE Units 3 & 4 Physics practice question worth 3 marks, testing your understanding of Accelerate charge (E field). It falls under How do things move without contact? in Unit 3: How do fields explain motion and electricity?. Submit your answer above to receive instant AI-powered marking and personalised feedback.
In this unit students use Newton’s laws to investigate motion in one and two dimensions. They explore the concept of the field as a model used by physicists to explain observations of motion of objects not in apparent contact. Students compare and contrast three fundamental fields – gravitational, magnetic and electric – and how they relate to one another. They consider the importance of the field to the motion of particles within the field. Students examine the production of electricity and its delivery to homes. They explore fields in relation to the transmission of electricity over large distances and in the design and operation of particle accelerators. A student-designed practical investigation involving the generation of primary data and including one continuous, independent variable related to fields, motion or light is undertaken either in Unit 3 or Unit 4, or across both Units 3 and 4, and is assessed in Unit 4, Outcome 2. The design, analysis and findings of the investigation are presented in a scientific poster format.
In this area of study, students examine the similarities and differences between three fields: gravitational, electric and magnetic. Students explore how positions in fields determine the potential energy of, and the force on, an object. They investigate how concepts related to field models can be applied to construct motors, maintain satellite orbits and to accelerate particles including in a synchrotron.
Analyse the use of an electric field to accelerate a charge, including: • electric field and electric force concepts: E = V/d and F = qE • potential energy changes in a uniform electric field: W = qV • the magnitude of the force on a charged particle due to a uniform electric field: F = qE.
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