Two wires of circular cross section are made of the same metal.Wire 1 has radius r and length L; wire 2 has radius 2r and length 2L. Thepotential difference between the ends of the wire is the same for both wires.For each of the following quantities, find the ratio of its value for wire 2to its value for wire 1: electric-field magnitude in the wire

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.