IB Physics Wheatstone Bridge

Below is a tutorial sheet on resistor combinations.

  1. Five identical resistors form a bridge configuration. A current I enters the group. Find the current in the bridge resistor.

  2. Resistances of 2Ω, 3Ω, 4Ω and 5Ω are placed clockwise around the sides of a square loop (in order from top left). Find the value of the vertical bridge resistor if no current flows through it when the configuration is connected to a 12 V battery.

  3. more to come