Worksheets 4.6.1 10 1 3/4 4.6 Electric motors List equipment that uses motors. P4.2d Quick starter Describe how motors work. Homework and 4.6.2; Describe how to change the and direction of worksheet Practical sheet rotation of a motor. Homework quiz 4.6; Technician’s notes 4.6; PowerPoint presentation 10 1 5/6 4.7 Generators and Explain how an alternator generates alternating P4.2g Worksheets 4.7.1, Quick starter transformers current. Homework 4.7.2 and 4.7.3, For an alternator, draw and interpret graphs of worksheet Practical potential difference generated in the coil against Homework quiz sheet 4.7, time. Technician’s Understand how induced alternating electric currents are used in transformers. notes 4.7; Apply the transformer equation linking the PowerPoint 4.7 numbers of turns and the potential differences induced. Worksheets 4.8.1 10 1 5/6 4.8 Loudspeakers and Describe how a moving-coil loudspeaker works. P4.2j Quick starter microphones Compare loudspeakers and headphones. Homework and 4.8.2; Describe how a moving-coil microphone works. worksheet Technician’s Homework quiz 4.8; PowerPoint presentation 4.8 Worksheets 4.9.1 10 1 5/6 4.9 Key concept: The link Explore how electricity and magnetism are Key concept Quick starter between electricity and connected. Homework and 4.9.2; magnetism Describe how electromagnetic induction occurs. worksheet Practical sheets Describe the principle of the electric Homework quiz 4.9.1, 4.9.2, 4.9.3 and 4.13.4; Technician’s notes
10 1 3/4 4.6 Electric motors List equipment that uses motors. Describe how motors work. Describe how to change the and direction of rotation of a motor. P4.2d Worksheets 4.6.1 and 4.6.2; Practical sheet 4.6; Technician’s notes 4.6; PowerPoint presentation Quick starter Homework worksheet Homework quiz 10 1 5/6 4.7 Generators and transformers Explain how an alternator generates alternating current. For an alternator, draw and interpret graphs of potential difference generated in the coil against time. Understand how induced alternating electric currents are used in transformers. Apply the transformer equation linking the numbers of turns and the potential differences induced. P4.2g Worksheets 4.7.1, 4.7.2 and 4.7.3, Practical sheet 4.7, Technician’s notes 4.7; PowerPoint 4.7 Quick starter Homework worksheet Homework quiz 10 1 5/6 4.8 Loudspeakers and microphones Describe how a moving-coil loudspeaker works. Compare loudspeakers and headphones. Describe how a moving-coil microphone works. P4.2j Worksheets 4.8.1 and 4.8.2; Technician’s 4.8; PowerPoint presentation 4.8 Quick starter Homework worksheet Homework quiz 10 1 5/6 4.9 Key concept: The link between electricity and magnetism Explore how electricity and magnetism are connected. Describe how electromagnetic induction occurs. Describe the principle of the electric Key concept Worksheets 4.9.1 and 4.9.2; Practical sheets 4.9.1, 4.9.2, 4.9.3 and 4.13.4; Technician’s notes Quick starter Homework worksheet Homework quiz
OCR%20Physics%203%20year.docx