Which is not true of an electric current?
If an electric circuit is broken, electric current will not flow.
An electric circuit provides a path for electric current to follow.
Electric current requires a specific path to follow.
Electric current exists in all materials.
d is not true
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To determine which statement is not true, let's analyze each option:
1. If an electric circuit is broken, electric current will not flow.
This statement is true. Electric current is the movement of electric charges through a conductor in a closed path called an electric circuit. If the circuit is broken or interrupted, the path for current flow is disrupted, and the current cannot flow.
2. An electric circuit provides a path for electric current to follow.
This statement is true. An electric circuit is a closed loop that consists of a power source, conductors (wires), and devices (such as light bulbs or resistors). It creates a continuous path for electric current to flow from the source, through the conductors, and back to the source.
3. Electric current requires a specific path to follow.
This statement is also true. Electric current needs a path to follow, which is provided by the electric circuit. Without a complete circuit, there is no defined path for the current to flow, and it won't exist.
4. Electric current exists in all materials.
This statement is not true. Electric current flows through materials that have the ability to conduct electricity, known as conductors. Examples of good conductors include metals like copper and aluminum. On the other hand, materials that do not allow electric current to flow easily, such as rubber or glass, are referred to as insulators. In insulators, electric current is greatly limited or does not exist.
Therefore, the statement "Electric current exists in all materials" is not true.