The diagram below depicts a cross section of coaxial conductor with an inner wire of diameter di and an outer conducting sheath of inside diameter do, and some material placed in the space between the two wires. Suppose that you have a coaxial wire with di=1.3 mm and do=7.55 mm, and we put mylar (κ=3.1) in the space between the two wires. If there is a potential of 1 kV between the wires, how much energy is stored in a 10  m piece of cable? For my answer I got 5.32 J which was wrong.

Three capacitors with capacitances C1 = 8 µF, C2 = 8 µF, and C3 = 6 µF are connected in a circuit as shown in the figure, with an applied potential of V through the battery. After the charges on the capacitors have reached their equilibrium, the charge Q2 on the second capacitor C2 is found to be 50 uC. C1 C2 C3 1. Calculate the equivalent capacitance of the circuit (expressed in uF) 2. Calculate the voltage through the battery (in Volt).

A potential difference Vab= 41.0 V is applied across the capacitor network of (Figure 1). If C1 =C2 =4.00μFand C4 =8.00μF, what must the capacitance C3 be if the network is to store 2.80×10−3 J of electrical energy? Express your answer with the appropriate units.

For b of this question, I think it's using the wrong formula. The question itself specifically states that capacitors are discharging, so shouldn't you use the formula V=Vs(e^(-t/RC)) instead of the formula V=Vs(1-e^(-t/RC)), which is for charging capacitors? Please correct me and tell me why if I'm wrong. Thank you!

A charged conducting spherical shell of radius R = 3 m with total charge q = 23 μC produces the electric field given by E⃗ (r)={014πϵ0qr2r̂ forforr<Rr>R(PICTURE ATTACHED OF EQUATION) a. Enter an expression for the electric potential inside the sphere ( r < R ) in terms of the given quantities, assuming the potential is zero at infinity.  V(r)= b. Calculate the electric potential, in volts, at radius r inside the charged shell. V(r) =

A Q load is placed at each of the opposite vertices of a square. Another q load is placed at each of the other two vertices of the square. A) If the resulting force over Q is zero, what is the ratio (Q/q), between Q and q loads? B) Calculate the electrical potential at each of the midpoints on the sides of the square. The side of the square is 10 cm and Q is +20uc.

The figure below is a graph of an electric potential as a function of position. A function is plotted on a coordinate plane with horizontal axis x and vertical axis V. Points A and B lie on the +x-axis, where A is closer to the origin. The function starts in quadrant 3, curves up and right to reach a local maximum at the origin, then curves down and right to reach a local minimum in quadrant 4. It then curves up and right, crosses the x-axis to the left of point A, and reaches its maximum value directly above point B. The function then curves down and right, crosses the x-axis, and continues until it exits the viewing window in quadrant 4. If a positively-charged particle is released from rest at point A, what will be its subsequent motion?The positively-charged particle will... oscillate around point B. remain at point A.   move to the right. move to the left.

Consider the figure below. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) (a) Find the charge stored on each capacitor in the figure shown above (C₁ = 10.4 µF, C₂ = 8.22 μF) when a 1.88 V battery is connected to the combination. Q₁ = с Q₂ Q3 X E₂= E3 0.300 μF (b) What energy is stored in each capacitor? E₁ = J J с C

A research-level Van de Graaff generator has a 1.95 m diameter metal sphere with a charge of 5.25 mC on it. At what distance in meters from its center is the potential 1.00 MV?

You are given a box of 1000 capacitors. Each capacitor has a capacitance of 10 nF and can withstand a maximum potential difference of 5.0 V each. You are given the task of designing a network of capacitors that can with stand a potential difference of 15 V, but with an equivalent capacitance of 10 nF using only the capacitors provided. You may use as many of the capacitors (well, up to 1000..) as you need, but to save money you should use the fewest number that will meet the requirements. Sketch your network in the space below. Indicate the points at which this network would attach to the potential difference.