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hi guys any help me with this?
A metal Spher, suitably insulated from earth, carries a charge of 0.25µC.
the radius or the sphere is 150mm what is the field strength at the surface of the sphere?
(surface area of the sphere is 4(pie)R²)
cheers!
hi can anyone help me with this question?
the flux density between two circular places each of the radius 200mm is 10µCm. what is the charge of the plates?
this is what ive done:
Flux density D = Flux = coulombs/m²
Area
area of one plate = 125680 mm
two...
2. i have been asked to find the 3rd value of a capacitor in series which will give the capacitence of 3 µf the two values are 10µf and 15µf
(no idea)
3. 3 capacitors in series 5µf 10µf 15µf across a 100v supply find the equivitiant capacity, the charge and voltage of each capacitor?
(no...
right ! ive done my home work bought a book with everything in it!
these are my final answers that i have i have used formulas but not going to write them as i havent the time readyy??!!!?? :D
1. 6µf
2. equiviliant capacitence across series 25Πf
v1 500v
v2 250v
v3 166.7v
charge
c1 500Πc
c2...
100v supply, value 20µf
charge formula = C=Q/V = Capacitence = charge/voltage
Capacitence = 20µf/100 = 0.2?
is this correct?
is energy the same as stored energy ?
energy stored: 1/2CV² = 1/2 Q²/C = 1/2 VQ
is this the correct...
hiya guys i have looks on wikipedia and im finding it raly difficult to work the energy and charge, i cannot get the grasp on how to work any of these questions out completely
IM STILL LOOKING ON THE WEB THOUGH!
CHEERS GUYS!
hi guys im stuying electriconic principles in school can anyone give me some pointers on how to:
1. a capacitor is connected across a 100v supply find the energy and charge if its value is 20uF
this is what i found : W=1/2(vxc)
100x0.020=2...
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