In a demonstration,a 4.00 cm² square coil with 10 000 turns enters a larger square region with a uniform 1.50 T magnetic field at a speed of 100 m/s.The plane of the coil is perpendicular to the field lines.If the breakdown voltage of air is 4 000 V/cm on that day,the largest gap you can have between the two wires connected to the ends of the coil and still get a spark is A)7.5 * 10^-³ cm. B)0.015 cm. C)7.5 cm. D)13 cm. E)15 cm.

Question

Quizplus · Accepted Answer

The induced emf (electromotive force) in the coil can be calculated using Faraday's law of electromagnetic induction. The change in magnetic flux is given by the product of the magnetic field, the area of the coil, and the number of turns. The induced emf is then the rate of change of this flux as the coil enters the magnetic field. The breakdown voltage of air is given, and the largest gap for a spark is determined by dividing the induced emf by the breakdown voltage per cm.

In a Demonstration,a 4