G485 A set of revision Q and A revision cards for the OCR A spec G485. 0.0 / 5 ? PhysicsElectric fieldsElectromagnetic InductionA2/A-levelOCR Created by: pappysmokepoleCreated on: 25-01-14 12:17 In what direction do electric field lines go between two oppositely charged particles. Positive to negative. 1 of 5 Define the electric field strength at a point in an electric field. The amount of force per unit positive charge. 2 of 5 State Faraday's law of electromagnetic induction. Induced emf is equal to the rate of change of magnetic flux linkage per unit time. 3 of 5 State Lenz's law of electromagnetic induction. The direction of any induced current is opposite to the direction of the flux change that causes it. 4 of 5 Define the permittivity of free space. The resistance encountered when creating an electric field. 5 of 5
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