| A | B |
|---|
| energy | commonly defined as the ability to do work. Energy brings about changes in systems or their surroundings |
| fixed resistor | a resistor that has one value of resistance |
| galvanometer | a device that is used to detect electric current |
| insulator | a material through which electrons cannot move easily |
| kinetic energy | energy of motion |
| knife switch | an electric switch in which contact is made by pushing one or more flat metal blades between the jaws of spring clips |
| motor | a device in which the magnetic field of a magnet interacts with the magnetic field of a current-carrying wire coil and causes rotation |
| open circuit | an incomplete path for electric current; electrons cannot flow through it |
| parallel circuit | a circuit in which there is more than one path for a current to follow |
| potentiometer | a variable resistor that is used to control voltage, as in the volume control of a compact disc player |
