Title: 273' Electromotive Force emf
127-3. Electromotive Force (emf)
Charge Pump
227-3. Electromotive Force (emf)
327-4. Current in a Single Loop
427-5. Internal Resistance
527-6. How to Solve??
627-6. How to Solve??
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827-6. Potential Difference (R in Series)
Behave like capacitors in parallel!
927-7. Multi-Loop Circuits (R in Parallel)
Junction a
Loop 1
Loop 2
Same as capacitors in series.
1027-7. Multi-Loop Circuits (R in Parallel)
- Which circuit has the largest equivalent
resistance? - Assuming that all resistors are the same, which
one dissipates more power? - Which resistor has the smallest potential
difference across it?
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1227-7. Multi-Loop Circuits
Find the equivalent resistance between points F
and H
R 10W
(Hint For each pair of points, imagine that a
battery is connected across the pair.)
1327-7. Multi-Loop Circuits
Find the equivalent resistance between points F
and G
1427-7. Multi-Loop Circuits
Given Es and Rs
Find the currents
Start with
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1627-7. Monster Mazes
If all resistors have a resistance of 4W, and all
batteries are ideal and have an emf of 4V, what
is the current through R?
1727-7. Monster Mazes
If all resistors have a resistance of 4W, and all
batteries are ideal and have an emf of 4V, what
is the current through R?
1827-7. Monster Mazes
If all capacitors have a capacitance of 6mF, and
all batteries are ideal and have an emf of 10V,
what is the charge on capacitor C?
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2027-9. RC Circuits
2127-9. RC Circuits
2227-9. RC Circuits
Charging
2327-9. RC Circuits
Charging
Which witch is which??
2427-9. RC Circuits
- E 1 kV, C 10 µF, R1 R2 R3 1 MW.
- With C completely uncharged, switch S is suddenly
closed (at t 0).
- Whats the current through each resistor at t0?
- Whats the current through each resistor after a
long time? - How long is a long time?
2527-9. RC Circuits
The three circuits below are connected to the
same ideal battery with emf E. All resistors have
resistance R, and all capacitors have capacitance
C.
- Which capacitor takes the longest in getting
charged? - Which capacitor ends up with the largest charge?
- Whats the final current delivered by each
battery?
2627-9. RC Circuits