4. Problem Solving Part (Under PT) - Gauss's Law (a) Find the electric field of a long wire that extends from negative infinity to positive infinity with radius s and length 7. Use the length / and radius s as the dimension of your Gaussian surface. Hint: Use the surface area of a cylinder. (b) Sketch the wire with its Gaussian surface. (c) Compare your answer with Example 21.10 of our lecture (refer to the result below from the example 21.10) and set the equation as a >>x and the result must be the same where your s is just the x for this one. 1 Q 4π€o x\x2 + a2

4. Problem Solving Part (Under PT) - Gauss's Law (a) Find the electric field of a long wire that extends from negative infinity to positive infinity with radius s and length 7. Use the length / and radius s as the dimension of your Gaussian surface. Hint: Use the surface area of a cylinder. (b) Sketch the wire with its Gaussian surface. (c) Compare your answer with Example 21.10 of our lecture (refer to the result below from the example 21.10) and set the equation as a >>x and the result must be the same where your s is just the x for this one. 1 Q 4π€o x\x2 + a2