When you turn your radio on and off, you are simply flicking the switch in the circuit, the same as any circuit with a switch in it. When you turn it on, the switch completes the circuit, and current can flow around the circuit.
The electrical circuit when turned on it is considered closed. By the same token when an electrical circuit is turned off the electrical circuit is considered open.
When you turn It off it breaks the circuit. When it is turned on it closes the circuit. To have a light bulb turn on it need to have continuity. Hope that helps
Because the radio is wired into the headlight circuit instead of the accessory circuit.
It is most likely a dead battery, especially if there is no power for lights or the radio. Check and clean the battery terminals because corrosion can break the electrical circuit.
To turn on and off the flow of electrical current.
to turn electrical potential into mechanical work/motion.
A series circuit is one in which the current must pass through all the electrical devices in the circuit in turn. A parallel circuit is one in which the current passes through each electrical device on the circuit following separate, independent path from all other devices on the circuit, one for each electrical device.
Electrical signals from the radio's circuitry energizes the voice coil of the speaker, which moves the cone of the speaker, that in turn disturbs air particles in its proximity, creating sound.
The answer is sound energy to electrical energy!
you might have a short circuit or you have a voltage drop