Chapter 22.1, Problem 22.1TYU

If all of the dimensions of the box in Fig. 22.2a are increased by a factor of 3, how will the electric flux through the box change? (i) The flux will be 3² = 9 limes greater; (ii) the flux will be 3 times greater; (iii) the flux will be unchanged; (iv) the flux will be $\frac{1}{3}$ as great; (v) the flux will be ${\left(\frac{1}{3}\right)}^2$ = $\frac{1}{9}$ as great; (vi) not enough information is given to decide.