Fisica 2

Topics: Electric charge, Electromagnetism, Energy Pages: 3 (685 words) Published: June 2, 2011
Capitulo 24
The two plates of a capacitor hold +2800uC of charge, respectively, when the potential difference is 930V. What is the capacitance? [pic]
How much charge flows from a 12.0-V battery when it is connected to a 12.6 u-F capacitor? [pic]
An electric field of 4.80x10^5 V/m is desired between two parallel plates, each of area 21.0 cm2 and separated by 0.250cm of air. What charge must be on each plate? [pic]
How strong is the electric field between two parallel plates of a 0.80-uF air-gap capacitor if they are 2.0mm apart and each has a charge of 92uC? [pic]
2200V is applied to a 2800-pF capacitor. How much electric energy is stored? [pic]
How much energy is stored by the electric field between two square plates, 8.0cm on a side, separated by a 1.3-mm air gap? The charges on the plates are equal and opposite and of magnitude 320uC? [pic] The electric field between the plates of a paper-separated (k=3.75) capacitor is 9.21x10^4 V/m. The plates are 1.95mm apart and the charge on each plate is o.675uC. Determine the capacitance of this capacitor and the area of each plate. [pic]


What is the magnitude of the electric force of attraction between an iron nucleus(q= +26e) and its innermost electron if the distance between them is 1.5x 10^-12m? [pic]
What is the magnitude of the force a +25uC charge exerts on a +2.5 mC charge 28cm away? [pic]
Particles of charge +75, +48, and -85uC are placed in a line. The center one is 0.35m from each of the others. Calculate the net force on each charge due to the other two.

Three charged particles are placed at the corners of an equilateral triangle of side 1.20m. Yhe charges are +7.0uC, -8.0uC and -6.0uC. Calculate the magnitude and direction of the net force on each due to the other two. [pic]

A charge of 4.15mC is placed at each corner of a square 0.100m on a side. Determine the magnitude and direction of the force on each charge.[pic] [pic]
What are the magnitude and direction of the...
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