Electric Current Questions and Answers (Q&A)

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The Biot Savart law is an expression of the magnetic field produced by a steady electric current. Deriving this law entails starting from Maxwell's equations, obtaining and solving Poisson’s equation for all three components of the vector potential. The Biot Savart law is an equati...Read More

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Current flowing in a wire produces a magnetic field around the wire. In a coil, the field from the adjacent turns is the same direction, so it adds up. That is why a coil of wire makes a much stronger magnet than one with fewer turns. The magnetic field line pattern looks very similar to that...Read More

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The SI unit for metering an electric current is the ampere, which is the stream of electrical charge across a surface at the ratio of one coulomb for every second. Electric current is gauged using a device called ammeter. Current is the flow of electrons that cause the phenomenon known as...Read More

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Joule heating, also known as resistive heating, is caused by electrical currents. It is used in incandescent light bulbs, which are phasing out and being replaced by different types of lighting fixtures. It is also used in motors, inductors, and generators, hot plates, and hair dryers. Any...Read More

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Ampere's force law presents that the force of attraction or repulsion between the two wires carrying currents is equivalent to their lengths and the magnitude of current passing through them. If the currents run in a corresponding direction, repulsion takes place. The physical beginning of this...Read More

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A current can be generated into a conducting loop if it is exposed to a charging magnetic field. You can alter the strength of the magnetic field, move the conductor in and out of the field, and revamp the distance between a magnet and/or conductor. The strength of the stream will vary in...Read More

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This law was named after Jean Baptist Biot and Felix Savart in 1820. The Biot Savart law is an equation that illustrates the magnetic field made by a current carrying wire, permitting the calculation of its strength at various points. They obtained the mathematical expression for the magnetic...Read More

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Voltage and current tend to be proportional. It is better to understand that voltage is the force that causes the current, which is the electromotive force. Energy is pushed like pressure pushes water in pipes. The voltage-current will flow. The circuit resists the flow. The more the circuit...Read More

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The stream or rate of electric charge in a conductor or medium between two points having a deviation in potential is generally expressed in amperes. Current flow is due to the difference of potential between two points. The flow of direction is opposite of electron flow directions. In ele...Read More

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