A photographic flash unit uses a 450 μF450\ \mu\text{F}450 μF capacitor to store 9.0 J of electrical energy. To trigger the flash, the capacitor is discharged through a xenon tube with an effective resistance of 8.0 Ω.
What is the maximum current through the xenon tube during discharge?
1.1 A1.1\text{ A}1.1 A
18 A18\text{ A}18 A
25 A25\text{ A}25 A
200 A200\text{ A}200 A
63 exam-style questions on AQA A Level Physics Capacitance (A-level only), covering Capacitance (A-level only), Parallel plate capacitor (A-level only), Energy stored by a capacitor (A-level only), and Capacitor charge and discharge (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.