clear
//Given
f=50                     //Hz
I=1.4

//Calculation
//
E=2*%pi*f*I*2*cos(2*%pi*f)
Ev=E/sqrt(2)

//Result
printf("\n (i) Potential difference across the coil is %0.0f  cos 100*pai*t",E)
printf("\n (ii) r.m.s value of p.d across the coil is %0.1f  V",Ev)