TEST 1- Identification. Read and identify the following. Write your answer on the space provided. 1. to provide the voltage needed to force current through the circuit. 2. circuit is a conducting loop in which current can transfer electrical energy from a suitable source to useful load. a 3. circuit allows the current to flow through a single conducting path branching. 4. circuit allows the current to flow through more than one path. 5. diagram is a drawing of an electric circuit showing how parts are connected together using only symbols. is the rate of energy transfer. 7. is a device that controls the current in a circuit. 8. is a device that converts electrical energy. 9. of refraction is a common indicator of the optical density of a material. 10. is the process by which light is separated into its colors due to differences in degrees of refraction. 6.