Electric Current Quizzes & Trivia

The needles will deflect in the opposite directions

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

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

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