# Electric Current Quizzes & Trivia

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Questions: 15  |  Attempts: 3921   |  Last updated: Oct 26, 2020
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The magnetic field lines produced by a bar magnet:    Chapter 7 electric current

Questions: 22  |  Attempts: 798   |  Last updated: Apr 18, 2019
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The current in a circuit equals the voltage difference divided by the resistance.     Electric current is flow of electricity through objects. As you are studying to become an electrical engineer one of the basic things to ensure you understand is how electric current and resistance. Take up the quiz below and...

Questions: 10  |  Attempts: 1014   |  Last updated: Jul 16, 2018
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In which direction does electric current flow around a circuit.     Questions: 13  |  Attempts: 2125   |  Last updated: Dec 13, 2019
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Joule’s law of heating is (1)        (2)         (3)            (4)    Questions: 67  |  Attempts: 174   |  Last updated: Mar 26, 2013
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Electrons are made to flow in a wire when there is    Related

## Electric Current Questions & Answers

What units are used to measure current?
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 elect
What is the definition of Biot-Savart Law?
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 poten
Why does current passing through a wire create a magnetic field?
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 fi
What kind of heating do electric currents cause?
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 gene
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