IB Physics Resistors and Capacitors

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A tutorial sheet of resistor and capacitor questions follows.

  1. An uncharged 6.0 mF capacitor is placed in series with a battery of emf 12 V. Find the charge on the capacitor after 6.0 min.
  2. A 20 pC capacitor is connected in series to a 20Ω resistor. The initial charge on the capacitor is 2.0 mC. Find the charge on the capacitor after 20.0 s.
  3. A battery of emf 12.0 V and internal resistance 2.0 Ω is used to charge a 600 pF capacitor for 5.0 min. The capacitor is initially uncharged. Find (a) the work done by the battery in the 5.0 min, (b) the energy stored in the capacitor after 5.0 min.

IB Physics Viscosity

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A tutorial sheet on viscosity is given below.

  1. Is viscosity a force?
  2. What is the cause of viscosity?
  3. State the SI unit for viscosity.
  4. A small sphere of radius r is falling vertically in a fluid of viscosity 𝛈 and density 𝜌. Find an expression for the terminal speed of the sphere.
  5. A viscous fluid flows steadily through a horizontal pipe. Does the pressure exerted by the fluid change along the pipe?