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Define magnetic flux density.
See it on the paper →Define magnetic flux density.
See it on the paper →Define magnetic flux density.
See it on the paper →On Fig. 2.3, label the magnetic poles with the letters N and S to indicate which one is the magnetic N pole and which one is the magnetic S pole.
See it on the paper →On Fig. 2.3, draw field lines to represent the Earth’s magnetic field outside the Earth.
See it on the paper →With reference to your answer in (b)(ii), describe how the observed magnetic field of the Earth varies around the surface.
See it on the paper →Define magnetic flux density.
See it on the paper →Define magnetic flux density.
See it on the paper →On Fig. 7.1, draw four field lines to represent the magnetic field around the wire due to the current in it. Fig. 7.1 (b) A long, straight wire carries a current into the page, as shown in Fig. 7.1.
See it on the paper →Calculate the magnetic flux cut by spoke AX during one revolution of the wheel. Give a unit with your answer. magnetic flux = unit
See it on the paper →Define magnetic flux density.
See it on the paper →On Fig. 7.1, draw four field lines to represent the magnetic field around the wire due to the current in it. Fig. 7.1 (b) A long, straight wire carries a current into the page, as shown in Fig. 7.1.
See it on the paper →A thin cylindrical bar magnet of length L and cross-sectional area A is attached to a block. An identical magnet is attached to a trolley, as shown in Fig. 1.1. s L N block D N bench magnets trolley P Fig. 1.1 The trolley is held so that the separation of the N poles of the two magnets is s. Point P is a distance D fro...
See it on the paper →Determine the direction of the uniform magnetic field.
See it on the paper →Determine the flux density B of the uniform magnetic field. Give a unit with your answer. B = unit
See it on the paper →Determine the direction of the uniform magnetic field.
See it on the paper →A spring is attached to a strong cylindrical magnet of length L and cross-sectional area A. The magnet is placed on thin card on top of a magnetic sheet on the bench, as shown in Fig. 1.1. spring cylindrical magnet magnetic sheet card bench t Fig. 1.1 The thickness of the card is t. The magnetic flux density at one of...
See it on the paper →Define magnetic flux density.
See it on the paper →State the direction of the magnetic field.
See it on the paper →Define magnetic flux density.
See it on the paper →Candidates need to use the word ‘per’ here or explicitly state that division is part of the definition. The phrase ‘carrying unit current’ does not convey division by current, while ‘per unit current’ does. Some candidates did not make it clear that the length (of the wire) or the current (in the wire) needs to be perpendicular to the field (lines). Some stated that the force was perpendicular to...
— Examiner report, October/November 2023, 9702/43 Q6(a) (Cambridge)
There were many correct statements here about the direction. Weaker candidates found it difficult to determine the correct direction.
— Examiner report, October/November 2023, 9702/43 Q6(b)(i) (Cambridge)
Candidates generally knew what is meant by a magnetic field. The most common mistake was to refer to the force acting on a charged particle, rather than a moving charged particle. When candidates referred to more than one object that the force was exerted upon, they all needed to be correct.
— Examiner report, May/June 2023, 9702/41 Q6(a) (Cambridge)
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