# RL Series Circuit

RL Series Circuit

This Demonstration shows the time dependence in a RL circuit of the current, voltage across the resistor , and voltage across the inductor . The selected variables are the DC voltage of the source , the resistance , and the inductance . We derive the equations: , (t)=V1-, and (t)=V. You can observe their changes as you vary the time . We also compute the time constant for this RL circuit: .

V

R

V

L

V

R

L

I(t)=1-

V

R

-t

R

L

e

V

R

-t

R

L

e

V

L

-t

R

L

e

t

T=

L

R