Questions 1-5 all parts

.\\ \\\\ {) Namez' 1. Consider a Silver wire with a radius of 4,0 x 10 a meter. 3. Determine the cross-sectional area of this wire. [50 x 10'5 m1] b. Calculate the amount of electrical resistance that 4000 meters of this wire would have. [1.3 o] _____ 2. A piece of copper wire with a cross-sectional area of 3.0 x 10'5 meter2 is 25 meters long. a. Determine the resistance ofthis wire. {1.4 x 10" o] b. How would changing the length of this copper wire change its resistivity? [Explaln] 20 Score: Regents Physics Worksheet 4.2.2 Electrical Resistance (20 points) Show all work multiple choice answers MUST be proven forqu credit! 3. Determine the length of an aluminum wire that has an electrical resistance of 3.0 x 10'3 ohms if its has a cross- . 2 sectional area of 2.0 x 10 6 meter . [0.21 m] 4. Given that r is the radius of a conductor with resistivity p a length L and a resistance of R, which of the following is an equivalent expression to the ratio: p? M (1) (3) RrL (2) L (4) \"2 W R Proof: Demonstrate the algebraic solution. 5. To decrease the electrical resistance of a metal conductor one should (1) cool the conductor to a low temperature (2) decrease its radius (3) decrease its cross-sectional area (4) increase its length Proof: Explain your reasoning I show calculatlons