Physics 7408: Electricity Topical Past Paper Questions

Figure 3 shows a modern version of Bertozzi's experiment to measure the kinetic energy of high-speed electrons. A timer is used to measure the time taken for a pulse of electrons to travel from the detector to the aluminium block. Figure 3 A potential difference (pd) of 1.30 MV i…

Figure 4 is a plot of current–voltage data for a filament lamp L. ## Figure 4 The current I was measured as the voltage V across L was increased at a steady rate. These data were obtained using a current sensor and a voltage sensor connected to a data logger. The logger recorded…

Conductive putty can easily be formed into different shapes to investigate the effect of shape on electrical resistance. 1 A student uses vernier callipers to measure the diameter $d$ of a uniform cylinder made of the putty. Suggest one problem with using callipers to make this m…