Problem $1$a: Write an equation for $\frac{?}{?}$ in terms of $$ and $v$ :

Problem $1$b: Write an equation for $K$ in terms of $$ and v :

Problem $1$c: Write an equation for $J$ in terms of $$ and $v$ :

Problem $1$d Write an equation for I in terms of $q$ and $t$ :

Problem $1$e: Draw a figure showing how I is related to $K$ and show the mathematical relationship between I and $K.$

Problem $1$f: Write the equation for I in terms of $J$ and $|{)}_{?}$ :

Problem $1$g: Draw the hysteresis curve for iron.