The wire moves in the direction shown as current passes through it. Label the polarities of the magnets A and B. (1 mark) Explain the behaviour of the flexible wire. (2 marks) ___________________________________________________________________________________ b) The figure below shows an induction coil used to step-up voltage. i) State the difference between the induction coil and a step-up transformer. (1 mark) ii) Explain how voltage is stepped up by the induction coil. (3 marks) The voltage is stepped up from 12V to 15kV. Determine the ratio of the secondary to primary coils in the induction coil. (1 mark) The function of the capacitor is to eliminate sparking at the contacts. State why sparking occurs at the contacts. (1 mark) State how the capacitor eliminates sparking. (1 mark) a) X-rays are used for detecting cracks inside metal beams. State the type of the x-rays used. (1 mark)
The wire moves in the direction shown as current passes through it. Label the polarities of the magnets A and B. (1 mark) Explain the behaviour of the flexible wire. (2 marks) b) The figure below shows an induction coil used to step-up voltage. i) State the difference between the induction coil and a step-up transformer. (1 mark) ii) Explain how voltage is stepped up by the induction coil. (3 marks) The voltage is stepped up from 12V to 15kV. Determine the ratio of the secondary to primary coils in the induction coil. (1 mark) The function of the capacitor is to eliminate sparking at the contacts. State why sparking occurs at the contacts. (1 mark) State how the capacitor eliminates sparking. (1 mark) a) X-rays are used for detecting cracks inside metal beams. State the type of the x-rays used. (1 mark) ___________________________________________________________________________________
PHYSICS-PAPER-2-f.docx