Explore BrainMass


Circuits - Charge and Voltage

A potential difference of 750 V is applied across two capacitors of capacitance 5 uF and 10 uF in series. Find the charge on each capacitor and voltage across each.


Consider a group of capacitors, where C1=14 µF and C2=6.8 µF. Terminals A and B are connected to a 9.0 V battery. Find the energy stored in each capacitor. 14 µF capacitor : 6.8 µF capacitor : 22 µF capacitor: Please see attached for diagram.


For the last question I posted, the Key says the answer is 0.50 nF. How do they get that answer? P.S. I have Teflon being 2.1 and paper being 3.5

Dielectrics: Capacitors

A capacitor is made from two parallel plates, each with an area of 146 cm^2. The plates are separated by a distance of 0.58 mm. Half of the area within the plates is filled with paper and the other half is filled with air. Calculate the capacitance of this capacitor.

Define non destructive testing and discuss non mechanical properties

Hi can you help me with sections 2,3 of a materials assignment? section 2 Define what is non destructive testing and illustrate some of it's usage. to support this detail three methods of non destructive testing and write a clear explanation of the process involved and where they might be used. section 3 choose one of the

What is the equivalent resistance and capacitance?

1. A 100 ohm resistor is joined in parallel with a 47 ohm resistor. What is the equivalent resistance? 2. Three capacitors of 2.0, 5.0, and 20 microF are joing together in parallel. What is their equaivalent capacitance? 3. Three capacitors of 1.0, 1.5, and 5.0 uF are joined together in series. What is their equivalent cap

Capacitors: Solving when they are in Series and Parallel

Question: The problem shows a circuit with 2 capacitors in series and on one side of the circuit: C1 = 8.2 micro-F, C2 = 22 micro-F. Together, those two capacitors are in parallel with C3, which = 15 micro-F. The question asks what is the energy stored in each capacitor, if the circuit is connected to a 9.0 V battery. The po

7.5 Macro-F & 15 Micro-F Capacitors

Hi. Can someone please walk me through how to do the following problem? Two capacitors, one 7.5 micro-F and the other 15 micro-F are connected in a series across a 12-V battery. (a) Find the equivalent capacitance of the two capacitors. (b) Which capacitor stores more charge. Explain. (c) Find the charge stored on each capaci


Two capacitors are connected in parallel. If a third capacitor is connected in parallel with the other two, does the equivalent capacitance increase, decrease, or remain the same? Explain.

Voltage on a capacitor

A 12.5 micro Farad capacitor is charged by a 150 volt battery and then is disconnected from the battery. When this capacitor (C1) is then connected to a second (uncharged) capacitor, the voltage on C1 drops to 10 volts. What is the value of C2? (I need a very detailed solution, with every micro-step detailed)

Equivalent Capacitance

Evaluate the equivalent capacitance in the attached file 'Capacitor.doc'. All the capacitors are identical and each has a capacitance of C.

Capacitance and electric potential

A 2.61 micro F capacitor is charged to 1380 V and a 7.79 micro F is charged to 490 V. These capacitors are then disconnected from their batteries, and the positive plates are now connected to each other and the negative plates are connected to each other. What will be the charge on the 2.61 micro F capacitor and what will be th

Nested Shell Capacitor

A) Argue that the energy stored in the electric field of such a capacitor is Ufield=1/2CVo2, if Vo is the potential difference. (Hint: Argue that between the plates, the field strength is EVo/d, where dRo -RI is the distance between the conductors. Use the equation for the capacitance of a nested sell capacitor

Electrostatic Energy

1. A negative charge in an electric field moves from a point where the potential is zero to a point whre it is -100V. Discuss the energy change and the work done. 2. Imagine a hollow, spherical, positively charged conductor of radius R that is far away from any other bodies. Draw a graph of its potential V as a function of r