To calculate the force on a wire carrying a current at right angles to a magnetic field, use the equation: 2 A flows through a 50 cm wire. Calculate the force acting on the wire when it is placed ...

But it was way better. The reason why these predictions were off was that the equations did not take into account the magnetic fields. “We found that certain ratios of the cut’s width and ...

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This is because the magnetic field equations are symmetric with regard to the process of swapping the N and S poles. In recent years, the concept of symmetry has been generalized in numerous ...

Observing the effects of special relativity doesn't necessarily require objects moving at a significant fraction of the speed of light. In fact, length contraction in special relativity explains how ...