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Are there any materials that undergo strong contraction when an electric current is introduced?
Yes, all piezoelectric materials exhibit the reverse piezoelectric effect.
A piezoelectric material is one that generates an electric field or electric potential in response to applied mechanical stress. Therefore, in the reverse case, passing an electric current through the material or an electric potential across the material, will cause it to contract or elongate, depending on the direction of the current.
One of the best example of this is lead zirconate titanate which will contract/elongate up to about 0.1% of the original dimensions.
What else can I help you with?
The flow of electric charges is called?
The flow of electric charges is current.
Why electric current across a wire drops?
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
What allows the current to enter the electronromagnet in an electric motor?
The resistor allows current to enter the electromagnet in an electric motor. The resistor regulates the amount of current that enters the electric motor.
Which part of a circuit is a current?
Current is the flow of electric charge or the rate of the flow of an electric charge through a conductor.
What device uses motion in an electric field to produce an electric current?
electric genarator
What materials is a insulator against electric current?
Materials that are good insulators against electric current include rubber, glass, plastic, and ceramic. Insulators are materials with high electrical resistance, which prevents the flow of electric current through them. These materials are commonly used to coat or encase electrical wires and components to prevent electrical current from leaking or causing short circuits.
What are materials that allow electric current to move through them?
Materials that allow electric current to move through them are called conductors. Common examples include metals such as copper, silver, and aluminum. Conductors have low resistance to the flow of electric current due to their ability to easily transfer electrons.
What kind of substances can electric current can flow through?
Electric current can flow through conductive materials such as metals (copper, silver, aluminum), electrolytes (saltwater, acids), and certain semiconductors (silicon, germanium). Insulating materials, like rubber and plastic, do not allow electric current to flow.
What materials does NOT allow a current to pass through it?
Some materials that do not allow a current to pass through them include rubber, glass, and plastic. These materials are classified as insulators because they have high resistance to the flow of electric current.
What material allows electric current to pass through?
Electric current flows in conducting materials such as metals. The best conductor of electric current is silver, followed closely by copper and then aluminium.
How does electric current travel?
Electric current travels through a closed circuit, flowing from a higher voltage to a lower voltage. It moves through conductive materials such as wires, where the flow of electrons creates the electric current. The rate of flow of electric current is measured in amperes.
The ability of an object to transfer electric current?
The ability of an object to transfer electric current is determined by its electrical conductivity. Materials with high electrical conductivity, such as metals, allow electric current to flow easily through them, while insulating materials have low electrical conductivity and inhibit the flow of current. Conductors like copper and silver are widely used for their high electrical conductivity.
What are the materials that electrial current cannot pass through?
Electrical current cannot pass through materials that are insulators, such as rubber, glass, plastic, and wood. These materials do not allow the flow of electrons due to their high resistance to electric current.
Why does conduct of electricity require a cord?
Electric current is the movement of electrons. Various materials can conduct current, but the best materials are metals, because they have plenty of electrons which can move freely. Electric appliances, therefore, are provided with cords which contain metallic strands (usually copper) which carry the current.
What matter has the ability to carry an electric current?
An electrical conductor has the ability to carry an electric current. Most of the best conductors are metals such as copper. Water containing ions can also conduct an electric current (which lead-acid batteries rely on)
Is a conductor necessary for electricity to flow?
Yes, a conductor is necessary for electricity to flow. Conductors are materials that allow the flow of electric current, while insulators do not allow the flow of electric current.
What material has high resistance to the flow of electric current?
The material that has high resistance to the flow of electric current is called an insulator. Examples of insulating materials include rubber, glass, and plastic.
