Acharya Nagarjuna University Potential Energy Questions please answer the questions as shown on the images with some explanations thank you Question 1 —-

Acharya Nagarjuna University Potential Energy Questions please answer the questions as shown on the images with some explanations thank you Question 1
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Question 2
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Question 3
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Question 5
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Question 6
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Four charges are arranged in a 10 mm square as shown below, with q = 10 C:
+9
+
d=10mm
+
-29
d=10 mm
a) What is the electric potential energy of this configuration (assuming U(oc) = 0)?
b) If these charges began very far apart (at infinity), would you have to put energy into the system in
order to create this configuration, or would you have to take energy out?
c) What is the electric potential at the point in the very center of the square?
The parallel plate capacitor below has a capacitance of C = 204F.
B
A
a) What is the area of the plates if they are 0.70 mm apart?
b) If the capacitor is charged to a potential difference of 20 V, what is the electric field in the capacitor?
c) If an electron were then moved from point A to point B, by how much would its potential energy
change? The dashed lines are evenly spaced.
c) A household circuit basically works like this: you have a bunch of devices (resistors) that you need
to put in a circuit, as you plug them in and unplug them. All the devices you plug in need a certain
amount of power. As you add more devices into the circuit, you want to make sure that their power
does not decrease as the number of resistors increases so they can continue to run. Should you wire
them in parallel or in series? Assume that the potential supplied to the whole circuit is a constant 120
V. Explain your answer.
e) The following junctions have current flowing into or out of them. The arrows show the direction of the
assumed current, while the values are the values given that assumption. Which of these are impossible
according to Kirchoff’s junction rule?
2 A
-3 A
2 A
-2 A
-2 A
-2 A
T* TI I
4 A
-5 A
For each of the charges, draw four equipotential curves, and indicate two points, A and B such
that VAB > 0.
a) A point charge with charge – Q:
-Q
b) A wire with linear charge density +1:
+A
For the following circuit:
R1
10
*
R2
10
R3
10
+2V
+3V
?
a) Label the currents through the three resistors (including directions; as usual it is okay if you get the
direction wrong)
b) Clearly write your equations from the junction and loop rules in terms of 11, 12, and 13.
c) Calculate 11, 12, and 13.
For the following circuit containing two capacitors:
300 UF
200 pF
Hill
a) What is the equivalent capacitance of the two capacitors?
b) What is the potential difference across the bottom capacitor?
c) How much charge does the top capacitor have?

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