A small, rigid, square loop of wire is held stationary in a uniform magnetic field. The magnetic field is initially constant, but then its magnitude begins to increase linearly with time. Which of the following statements best describes the nature of the magnetic field and the electric field induced in the loop?
The magnetic field is static and the induced electric field is static.
The magnetic field is changing and the induced electric field is static.
The magnetic field is changing and the induced electric field is changing.
The magnetic field is static and the induced electric field is changing.
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Create Free Account Log inThis is a free VCE Units 3 & 4 Physics practice question worth 1 mark, testing your understanding of Static vs. changing fields. 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.
Identify fields as static or changing, and as uniform or non-uniform.
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