In a physics experiment, scientists use the equation R=pL/a to represent the resistance in a conductive wire. Rewrite this formula to represent the length of the wire in terms of R , p, and A where p represents the resistivity and A represents the cross-sectional area of the wire.



Use your equation to determine the Length of a wire with a resistance of 7Ω a resistivity of

2.44 x 10^-8 Ω x m and a cross-sectional area of 0.02 m^2.