Chegg A 14.0 gauge copper wire of diameter 1.628 mm carries a current of 13.5 mA . What is the potential difference across a 1.95 m length of the wire

Explanation:

Given data

Diameter d=1.628 mm=1.628×10⁻³m

Current I=13.5 mA=13.5×10⁻³A

The Cross-sectional  Area is given as:

The potential difference across a 1.95 m length of 14-gauge copper wire

Length L=1.95 m

Copper Resistivity p=1.72×10⁻⁸Ω.m

The Resistance of copper wire is given by:

R=0.01612Ω

The Potential difference across the copper wire is:

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

from wikipedia