Across the entire sphere of electronics and electrical engineering, there aren’t many principles that are as fundamental as Ohm’s Law.  Named after the ...

The control variables are kept the same by: not changing the wire during the experiment (material, length and cross section area of the wire stay the same); keeping the current small (temperature of ...

Electric current is caused by moving electric charges. The effects of charge and electric fields can be investigated by looking at the forces they exert on conductors and insulators. Simple circuits - ...