Rubber. Or an insulator.
An object that stops the flow of electricity is called an insulator. Insulators prevent the movement of electric charges and are commonly used to protect against electric shocks or to control the flow of electricity in circuits. Examples of insulators include rubber, plastic, and glass.
switch...this break the flow of electricity, from a circuit
An insulator is a material or device that stops or prevents the flow of electricity.
Switches.
Battery
An object that does not allow electricity to flow through easily is an insulator. It is so hard that it often won't go through at all. Sometimes you find an exception, like lightening. There is nothing that electricity cannot flow through altogether.
A switch in a circuit works by opening or closing a pathway for electricity to flow. When the switch is closed, it completes the circuit and allows electricity to flow through. When the switch is open, it breaks the circuit and stops the flow of electricity. This control of the flow of electricity allows the switch to turn devices on and off in a circuit.
Electricity that does not flow is called static electricity. It is the accumulation of electric charge on an object's surface and it remains in one place until it is discharged.
A switch is a device that stops and starts current flow in a circuit.
Static electricity is used to describe electricity that does not flow but remains in one place. It occurs when there is an imbalance of electric charges on the surface of an object.
The property that describes how easily electricity travels through an object is called conductivity. Materials with high conductivity allow electricity to flow easily, while materials with low conductivity impede the flow of electricity.
Turn off the switch, generator runs out of fuel, wind not turning the windmill, solar panel at night, diode, insulation.