« · »

Physlets run in a Java-enabled browser, except Chrome, on the latest Windows & Mac operating systems. If Physlets do not run, click here for help updating Java & setting Java security.

Problem 30.3: Find resistance, battery voltage and power dissipated

Please wait for the animation to completely load.

Answer the following questions for each circuit in this animation. Assume an ideal battery (no internal resistance) and ideal meters but note that the battery and unknown resistor are different for each circuit (electric potential is given in volts and current is given in milliamperes). Use the slider to change the variable resistor. Restart.

  1. What is the resistance of the unknown resistance and the voltage of the battery in each circuit?
  2. What is the range of power dissipated for each circuit over the full range of variable resistance values?

Problem authored by Anne J. Cox.

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics