The teacher can put their own values of resistor into the circuit using the easy access screw terminals. If there are several boards in the classroom then the students can verify the relationship for several different conditions.

The board strips away the complexity of wiring the circuit and brings Physics to the forefront teaching the relationship between the out of balance resistance and current.

AA battery included.

This product requires the use of the Philip Harris Decade Resistance Unit (B8L32177)