Transcript Slide 1

PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
[Insert puzzler here]
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
1 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
AGENDA
ITEM
Introductory Concept Survey (Individual)
Theory of Discharging and Charging Capacitors with Series Resistance
Charging up a Capacitor Calculations
Visual Charge/Discharge with Ultracapacitors
Demonstration of Charge/Discharge Curve Using LabPro
Concept Survey Re-vote (Group)
Dismissal
DURATION
START
0:10
0:20
0:20
0:25
0:25
0:10
0:00
0:10
0:30
0:50
1:15
1:40
1:50
Announcements:
•
Please power and start your Labquest unit at the beginning of class.
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
2 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
1 of 3
A capacitor C = 1 mF is placed in series with a resistor R = 100 kW,
and connected to a battery through a switch. Initially the switch is
open, and the capacitor is completely discharged. Immediately after
the switch is closed, the magnitude of the potential difference
across the resistor is
1.
2.
3.
greater than that across the capacitor.
equal to that across the capacitor.
less than that across the capacitor.
V
+
R
C
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
3 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
2 of 3
A capacitor C = 1 mF is placed in series with a resistor R = 100 kW,
and connected to a battery through a switch. Initially the switch is
open, and the capacitor is completely discharged. At a time 1 s after
the switch is closed, the magnitude of the potential difference
across the resistor is
1.
2.
3.
greater than that across the capacitor.
equal to that across the capacitor.
less than that across the capacitor.
V
+
R
C
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
4 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
3 of 3
A capacitor is connected to a resistor through a switch. Initially the switch is
open, and the capacitor is charged with a charge Q to a voltage V. After the
switch is closed, the magnitude of the potential difference across the
resistor, vR, is best represented by which selection:
vR
1
V
C
R
t
vR
2
vR
4.
V
V
t
DEAN SIEGLAFF
3
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
t
The resistor
voltage is
zero at all
times in this
case.
5 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
AGENDA
ITEM
Introductory Concept Survey (Individual)
Theory of Discharging and Charging Capacitors with Series Resistance
Charging up a Capacitor Calculations
Visual Charge/Discharge with Ultracapacitors
Demonstration of Charge/Discharge Curve Using LabPro
Concept Survey Re-vote (Group)
Dismissal
DURATION
START
0:10
0:20
0:20
0:25
0:25
0:10
0:00
0:10
0:30
0:50
1:15
1:40
1:50
Announcements:
•
Please power and start your Labquest unit at the beginning of class.
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
6 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
1 of 3
A capacitor C = 1 mF is placed in series with a resistor R = 100 kW,
and connected to a battery through a switch. Initially the switch is
open, and the capacitor is completely discharged. Immediately after
the switch is closed, the magnitude of the potential difference
across the resistor is
1.
2.
3.
greater than that across the capacitor.
equal to that across the capacitor.
less than that across the capacitor.
V
+
R
C
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
7 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
2 of 3
A capacitor C = 1 mF is placed in series with a resistor R = 100 kW,
and connected to a battery through a switch. Initially the switch is
open, and the capacitor is completely discharged. At a time 1 s after
the switch is closed, the magnitude of the potential difference
across the resistor is
1.
2.
3.
greater than that across the capacitor.
equal to that across the capacitor.
less than that across the capacitor.
V
+
R
C
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
8 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
3 of 3
A capacitor is connected to a resistor through a switch. Initially the switch is
open, and the capacitor is charged with a charge Q to a voltage V. After the
switch is closed, the magnitude of the potential difference across the
resistor, vR, is best represented by which selection:
vR
1
V
C
R
t
vR
2
vR
4.
V
V
t
DEAN SIEGLAFF
3
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
t
The resistor
voltage is
zero at all
times in this
case.
9 of 9
PHYS-1700/2100 II8 The RC Series Circuit
NEBRASKA WESLEYAN UNIVERSITY
SPRING 2014-2015
PROJECTION SCREEN
1
4
1
4
1
4
1
4
2
5
2
5
2
5
2
5
3
6
3
6
3
6
3
6
HAND IN TODAY’S ACTIVITIES SHEETS
DEAN SIEGLAFF
NATHANIEL CUNNINGHAM
BOB FAIRCHILD
10 of 9