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18 Cards in this Set
- Front
- Back
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Capacitance |
Q/V Unit is farads F |
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Charge and Voltage |
Q= CV V = q/C |
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Capacitance in parallel |
In conservation of charge (like I current) I = toal q = q1 + q2 Total C V = C1V + C2V C= C1 + C2 |
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Capacitance in series |
Q=q1=q2 Conservatiob of energy Total V = V1+V2 Q/C= q/c1 + q/c2 1/c = 1/c1 + 1/c2 |
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2 Functions of capacitors |
Store energy In oscillators Blocking DC |
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Why positive plates of capacitor in parallel have different charge |
Potential difference across each capacitor is the same Q=CV So qv= q1V + q2v for parallel |
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Calculate energy transferred in the battery |
qV or CV2 Not 1/2 qV !!! For battery |
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Suggest why energy stored in battery qV and energy stored in capacitor 1/2qV is different |
qV> .5qV Energy lost in resistance/wires/battery |
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Define capacitance |
Ratio of charge and potential difference |
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Explain why capacitor store energy but not charge 《》 |
Capacitor have equal magnitude of + and - charge Total charge of capacitor is 0 + and - are seperated Work done to achieve this seperation so energy stored |
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Define dopplers effect |
The difference between emited and received frequency When there is relative motion between source and receiver |
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Speed of sound relative to an observer If observer come closer to source |
U+v The one on top of equation U-v if moving away |
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State the wave phenomenon that limits the resolution of the eye |
Diffraction |
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State reyleigh criterion for determining if 2 images are just resolved |
The 1st minimum of the diffraction pattern Falls on central maximum of the other diffraction pattern |
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Determine if the images formed will be resolved |
Compare theta or lamda (seperation of object) Use two equations. Lamda/b for object 1.22xlamda/b for observer |
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Wavelength? |
With doppler effect Freq increase wavelength decrease!! |
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Assumption of the redshift equation #f/f = v/c |
Velocity of moving object is much less than velocity of light |
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For one capacitor 6 V For whole capacitor?
You know the total capcitance You know one capacitance |
Total charge is the same as charge of one capacitor |
