day 28
DESCRIPTION
DAY 28. DC circuits. Slide 23-3. Slide 23-4. Slide 23-5. Drawing Circuit Diagrams. Slide 23-12. Checking Understanding. The following circuit has a battery, two capacitors and a resistor. Which of the following circuit diagrams is the best representation of the above circuit?. - PowerPoint PPT PresentationTRANSCRIPT
DAY 28DC circuits
Slide 23-3
Slide 23-4
Slide 23-5
Drawing Circuit Diagrams
Slide 23-12
Checking UnderstandingThe following circuit has a battery, two capacitors and a resistor.
Which of the following circuit diagrams is the best representation of the above circuit?
Slide 23-13
Answer The following circuit has a battery, two capacitors and a resistor.
Which of the following circuit diagrams is the best representation of the above circuit?
A
Slide 23-14
Kirchhoff’s Junction Law
Slide 23-15
Kirchhoff’s Loop Law
Slide 23-16
Using Kirchhoff’s Laws
Slide 23-17
Series Resistors
Slide 23-22
Parallel Resistors
Slide 23-23
There is a current of 1.0 A in the circuit below. What is the resistance of the unknown circuit element?
What is the current out of the battery?
Example Problems
Slide 23-24
What is the current supplied by the battery in the following circuit? What is the potential at each node? What is the current in each branch?
Example Problem
Slide 23-25
Find the current in and the potential difference across each of the resistors in the following circuit.
Example Problem
Slide 23-26
Example ProblemAs we saw in the previous chapter, a resistor connected to a power supply works as a heater. Suppose an investigator is using a resistor (a length of nichrome wire in an insulating sheath) connected to a battery to warm a solution in the laboratory. It’s a simple circuit:
A. What power does the resistor provide to warm the solution?
The investigator then decides that this warming is happening too slowly. She has another resistor, but doesn’t have another battery.
B. Which of the following circuits will provide more power? Slide 23-28
Electrical Safety
Analyzing Complex Circuits
Slide 23-29
WORKBOOKS 23.1-4QUESTIONS 1-4, 7,10,11,16,17
Capacitance and CapacitorsThe charge ±Q on each electrode is proportional to the potential difference ∆VC between the electrodes:
Slide 21-36
Charging a Capacitor
Slide 21-37
It requires energy to charge a capacitor. This energy is stored as electrical potential energy
The Capacitance of a Parallel-Plate Capacitor
Slide 21-38
Capacitor Combinations
Slide 23-30
Which of the following combinations of capacitors has the highest capacitance?
Checking Understanding
Slide 23-31
Answer Which of the following combinations of capacitors has the highest capacitance?
B
Slide 23-32
Which of the following combinations of capacitors has the lowest capacitance?
Checking Understanding
Slide 23-33
Answer
C
Which of the following combinations of capacitors has the lowest capacitance?
Slide 23-34
RC Circuits
Slide 23-35
The following circuits contain capacitors that are charged to 5.0 V. All of the switches are closed at the same time. After 1 second has passed, which capacitor has the highest voltage?
Checking Understanding
Slide 23-36
Answer The following circuits contain capacitors that are charged to 5.0 V. All of the switches are closed at the same time. After 1 second has passed, which capacitor has the highest voltage?
C
Slide 23-37
Electricity in the Nervous System
Slide 23-40
The action potentialDepolarization Repolarization Reestablishing resting potential
Saltatory Conduction
Slide 23-41
WORKBOOKS 23.5-7QUESTIONS 20, 23, 27
Summary
Slide 23-43
Summary
Slide 23-44