question9
Question 9
A circular coil with 250 windings (turns) and a radius of 0,04 m, is rotated clockwise inside a magnetic field with a field strength of 3,2 T. 9.1 Calculate the magnetic flux through the coil at the position indicated on the diagram, where the coil is perpendicular to the field. (3) 9.2 If the coil … Read more
Question 9
9.1 Two identical metal spheres, P and Q, separated by a distance d, aresuspended from an insulated rigid wooden bar, as shown in the diagrambelow. The charge on the spheres are –4 μC and +8 μC respectively. 9.1.1 Sphere Q experiences an electrostatic force. In which direction will sphere Q move? Write down only TO … Read more
Question 9
Give reasons for your statements and calculations in QUESTIONS 9, 10, 11 and 12. 9.1 In the diagram below, O is the centre of the circle and point T lies on chord RS. Prove the theorem which states that if OT ⊥ RTS then RT = TS. (5) 9.2 In the diagram, O is the … Read more
Question 9
A silver Christmas tree can be made by placing copper wire, shaped in the form ofa tree, into a silver nitrate solution. The unbalanced equation for the reaction is: Cu(s) + AgNO3(aq) → Cu(NO3)2(aq) + Ag(s) 9.1 Define the term oxidation in terms of oxidation number. (2) 9.2 Write down the following for the reaction … Read more