The instantaneous potential difference between points.

Options

A. `8 sin (50 pi t+37 (pi)/180)`
B. `8 sin(50 pit-37(pi)/180)`
C. `10 sin(50pit)`
D. `10 cos(50 pit)`

Answer

B

Explanation

Impedence z=`sqrt((8-2)^(2)+(8)^(2)) =10 Omega`
current lags voltage by `37^(@)` , then
`i=10/10 sin (50 pi t-37^(@))`
`V_(AB)=ixxR=8 sin (50 pi t-37^(@))`