Physics

Problem

In a series

R

–

L

circuit, the current phasor is chosen along the positive

x

-axis. Which statement correctly describes the positions of the component voltage phasors? a)

V_R

lies along the current phasor, and

V_L

is drawn

90^{\circ}

behind

I

along the negative

y

\,-axis. b)

V_R

lies along the current phasor, and

V_L

is drawn

90^{\circ}

ahead of

I

along the positive

y

\,-axis. c)

V_R

lags the current by

90^{\circ}

, and

V_L

lies along the current phasor. d) Both

V_R

and

V_L

are

90^{\circ}

ahead of the current phasor.