1. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 1 [Insert puzzler here]

2. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 2 Announcements:

3. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 3 1 of 3 Which system has greater capacitance? 1.A (press 1). 2.B (press 2). 3.Both have same capacitance. 4.Cannot be determined without specifying the source of EMF. VACUUM POSITIVE PLATE NEGATIVE PLATE A B PAPER POSITIVE PLATE NEGATIVE PLATE

4. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 4 2 of 3 Which two-capacitor system has greater capacitance? 1.A (press 1). 2.B (press 2). 3.Both have the same capacitance. 4.Cannot be determined without specifying the source of EMF. 1000 pF A B

5. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 5 3 of 3 The capacitor C is charged initially with charge Q. After S1 is closed, the current through the resistor will 1.Start out small and get bigger for a while, but become steady. 2.Start out at a certain amount, and stay that way (steady current). 3.Start out big, but get smaller and smaller over time. SWITCH S1 OPEN C Q R

6. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 6

7. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 7 1 of 3 Which system has greater capacitance? 1.A (press 1). 2.B (press 2). 3.Both have same capacitance. 4.Cannot be determined without specifying the source of EMF. VACUUM POSITIVE PLATE NEGATIVE PLATE A B PAPER POSITIVE PLATE NEGATIVE PLATE

8. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 8 2 of 3 Which two-capacitor system has greater capacitance? 1.A (press 1). 2.B (press 2). 3.Both have the same capacitance. 4.Cannot be determined without specifying the source of EMF. 1000 pF A B

9. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 9 3 of 3 The capacitor C is charged initially with charge Q. After S1 is closed, the current through the resistor will 1.Start out small and get bigger for a while, but become steady. 2.Start out at a certain amount, and stay that way (steady current). 3.Start out big, but get smaller and smaller over time. SWITCH S1 OPEN C Q R

10. PHYS-1700/2100PHYS-1700/2100 II7 Series and Parallel CapacitanceNEBRASKA WESLEYAN UNIVERSITYSPRING 2014-2015 DEAN SIEGLAFF NATHANIEL CUNNINGHAM BOB FAIRCHILD of 9 10 14141414 25252525 3333 PROJECTION SCREEN HAND IN TODAY’S ACTIVITIES SHEETS 6666