The coil is moving parallel to the direction of the magnetic field, so no potential difference is induced. Here, the induced potential difference travels in the same direction as at B.Ī - The coil is at 360°, ie it is back at its starting point, having done a full rotation. The Marshall Cavendish Education Cambridge IGCSE. Please see links at the bottom of the page. These MME Physics revision cards cover all the major topics within the AQA GCSE Physics specification. Please note this title is suitable for any student studying: Exam Board: AQA Level: GCSE Subject: Physics First teaching: September 2016 First exams: June 2018 The UK's bestselling GCSE Science series has now been updated and specifically tailored for the new 2016 AQA GCSE Science (9-1) specifications. These booklets are free to download I hope they are useful. We do AQA Trilogy but most of the KS4 content is applicable for all boards. The coil is moving at 90° to the direction of the magnetic field, so the induced potential difference is at its maximum. Welcome to my page for new and improved SLOP booklets for Physics GCSE. The coil is moving parallel to the direction of the magnetic field, so no potential difference is induced.ĭ - The coil is at 270°. The coil is moving at 90° to the direction of the magnetic field, so the induced potential difference is at its maximum.Ĭ - The coil is at 180°. The final question on our GCSE Physics (8463) Higher Tier Paper 1 on Thursday 9 June 2022 was about energy transfers and circuits. The coil is moving parallel to the direction of the magnetic field, so no potential difference is induced.ī - The coil is at 90°. The potential difference-time graph for a dynamoĪ - The coil is at 0°. The diagram shows four different positions of the coil in a dynamo, and the corresponding potential difference produced. increasing the number of turns on the coil.increasing the strength of the magnetic field.The maximum potential difference or current can be increased by: The graph shows a sine curve that stays in the same direction all the time. The output of a rotating dynamo can be shown on a potential difference-time graph. This means that the current to the external circuit always flows in the same direction. As the induced potential difference is about to change direction, the connections are reversed. In a dynamo, a split ring commutator changes the coil connections every half turn. The dynamo In a bike dynamo, the magnet rotates inside a fixed coil of wire Some bike lights use a type of dc generator called a dynamo to run the lamps while the wheels are turning. However, it uses a split ring commutator rather than the two slip rings found in alternating current (ac) generators. A simple dc generator consists of a coil of wire rotating in a magnetic field. A direct current (dc) generator is another device that produces a potential difference.
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