Download a) right b) zero c) right d) left e) left

2B_FH_W08
Mid-Term 2
Dr. Ray Kwok
Student Name : _____________________________________________________
4.
Find the direction of the current in the resistor R shown in Figure at each the following
steps: (a) at the instant the switch is closed, (b) after the switch has been closed for several
minutes, (c) when the variable resistance r decreases, (d) when the circuit containing the
switch moves to the left, and (e) at the instant the switch is opened.
S
r
ε
R
a) right
b) zero
c) right
d) left
e) left
2B_FH_W08
Mid-Term 2
Student Name : _____________________________________________________
Dr. Ray Kwok