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Question2 A5: Explain self and mutual induction Magnede Two coils, coil1 and coil2 are placed next to each other. Coil1 is connected to an alternating voltage V which supplies a changing current in coil 1 (i) Draw the diagram (i) Explain Induced emf by self inductance and label the diagram and (iii) Explain Induced emf by mutual inductance and label the same diagram (1,2,2 marks) Question3 B3: Explain mmf and list equations that links it to other factors (i) (ii) Explain what mmf is List two different equations of mmf, such that they link different factors to produce mmf f) Use a diagram to aid your answer (2,2,3 marks) Question 4 A6: Explain the relationship between B and H in magnetism and what factors (i) Explain what the ratio of B (flux density) and H (magnetic field strength) (ii) Give the equation. affect this relationship represents i) Explain each factor of the equation. (2,1,2 marks)

Answer 1