PHYS208 Fundamentals of Physics II

Hint for Ch. 28, 69P

Differentiate the expression for the charge of a charging capacitor with respect to time to find the rate of change of charge. Evaluate at the time of interest.

For the rate of energy stored by the charging capacitor, differentiate the energy expression Q2 / 2C and use the above result.

Note that the rate of change of charge on the capacitor is the current in the circuit to be used for evaluation of the power dissipated by the resistor and the power delivered by the emf.

Last updated March 12, 1998.
Copyright George Watson, Univ. of Delaware, 1998.