A arcular coil enclosing an area of 100 cm^2 is made of 200 turns orf Copper wire, the wire making up the coil has resistance of 5 ohm and the ends of the wire are connected to form a closed circuit, Initially, at 1.1T Uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverse so that the final magnetic field has a magnitude of 1.1 T and points down ward through the coil. If the time required for the field to reverse directions in 0.10sec, what is the average current in the coil during that time? ​

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

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