A proton in a particle accelerator has a velocity of 4 x 10^7 m/s when observed at point A and a velocity of 3 x 10^7 m/s when observed at point B. If the voltage at point A is 800 V, what is the voltage at point B?

Two capacitors with capacitances of 1.0 and 0.5 µF, respectively, are connected inparallel. The system is connected to a 100 V battery. What charge accumulates on the 1.0µF capacitor?

A conducting sphere has a radius of 8.4 cm. A wire carries an electrical current of 1.3 μA into the sphere. How long will it take for the sphere to increase in potential to 1000V?

A region has a uniform electric field of 50 V/m to down. Point B is 3 meter to the left, and 4 meters above, point A. The voltage at point A is 600 V. What is the voltage at point B? O 450 V O 750 V O 350 V O 400 V O 800 V O 850 V

A coaxial cable used in a transmission line has an inner radius of 0.085 mm and an outer radius of 0.54 mm. Calculate the capacitance per meter for the cable. Assume that the space between the conductors is filled with a material with a dielectric constant of 3.5.

As a person moves about in a dry environment, electric charge accumulates on his body. Once it is at high voltage, either positive or negative, the body can discharge via sometimes noticeable sparks and shocks. Consider a human body well separated from ground, with the typical capacitance 130 pF. (a) What charge on the body will produce a potential of 15.0 kV? (b) Sensitive electronic devices can be destroyed by electrostatic discharge from a person. A particular device can be destroyed by a discharge releasing an energy of 260 ĵJ. To what voltage on the body does this energy correspond? V

Cardiac defibrillators must be able to supply a high voltage very quickly, and so use capacitors.  If a certain defibrillator has a 154 µF capacitor charges to 2,697 V.  If this electrical charge is released into the patient in a time of 4.85 milliseconds, what is the (average) power, in watts?

In the figure a potential difference of V = 91.2 V is applied across a capacitor arrangement with capacitances C₁ = 11.0 µF, C₂ = 5.62 µF, and C3 = 4.58 µF. If capacitor 3 undergoes electrical breakdown so that it becomes equivalent to conducting wire, what is the increase in (a) the charge on capacitor 1 and (b) the potential difference across capacitor 1? (a) Number i (b) Number i ! ! Units Units C₂ с V C₂

EMF = Vo = 6 volts. and C = 5 μF  Calculate the theoretical value of the charge (q) in the capacitor during charging at t = RC. Use equation 3.

An electrical technician requires a capacitance of 2 µF in a circuit across a potential difference of 1 kV. A large number of 1 µF capacitors are available to him each of which can withstand a potential difference of not more than 400 V. Suggest a possible arrangement that requires the minimum number of capacitors.