Electricity and Magnetism > Inductance
DCS# 5J20.10b
DC RL CIRCUIT
APPARATUS
900 H inductor
202-alcove
large demonstration ammeter with 25 mA shunt
202-19-E
6 V battery
202-02-D1
100 ohm resistor
101-09-G1
key switch
101-09-D4
DESCRIPTION
Close switch to show exponential rise of current.
NOTES
Inductor has an internal resistance of about 130
Ω
.
Its measured inductance is 450 H.
I
o
= V/R = 26 mA
t
= L/R = 2.0 s.