An emf is induced in a wire by moving the wire near a magnet. An emf is induced

Question

An emf is induced in a wire by moving the wire near a magnet. An emf is induced in a wire by keeping a stationary magnet near the wire. The emf in a conducting rod of length L moving perpendicular to a magnetic field is directly proportional to the speed of the rod. In a series LRC circuit a capacitor will be dominant at lower frequencies. The average energy dissipated in an inductor is zero. proportional to the inductance. proportional to both the inductance and frequency. proportional to the frequency. none of the above. Consider an LRC series circuit. The impedance of the circuit increases if XC increases. When is this statement true? always true true only if XL is less than or equal to XC true only if XL is greater than XC true only if XL is equal to XC never true A circular coil of copper wire is lying flat on a horizontal table. A bar magnet is held with its south pole downward, vertically above the center of the coil. The magnet is kept stationary with respect to the coil. As viewed from above, you can say that the magnet induces counterclockwise current in the loop. clockwise current in the loop. no current in the loop. an emf but no electric current in the loop. Not enough information is provided. A coil lies flat on a table top in a region where the magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades? The induced current flows counterclockwise. The induced current flows clockwise. There is no induced current in this coil. The current flows clockwise initially, and then it flows counterclockwise before stopping. The current flows counterclockwise initially, and then it flows clockwise before stopping.

Explanation / Answer

1) It is true, an EMF is induced.

It is because of change in the magnetic flux.

When a conductor moves through a magnetic field, there will be a generatedmotional emf. This is one example of Faraday's Law and it arises from the magnetic force

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