Electric Circuits Answers

2. Draw the net electric field ate the center of:

a. A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints;

b. An equilateral triangle of side length 1.0 m with alternating +1-C, –1-C, and +1-C charges

placed at its vertices;

c. A square of side length 1.0 m with alternating +1-C, –1-C, +1-C, and –1-C charges placed

at its vertices

d. Calculate the magnitude and determine the direction of the net electric field at the center

of each configurations in a, b, an c.

Calculate the total electric potential at the center of:

a. A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints; 

b. An equilateral triangle of side length 1.0 m with alternating +1-C, –1-C, and +1-C charges 

placed at its vertices;

c. A square of side length 1.0 m with alternating +1-C, –1-C, +1-C, and –1-C charges placed 

at its vertices

d. How did your answers in a, b, and c compare with your electric field calculations for similar 

configurations?

Draw the net electric force on a +1-C charge placed at the center of: 

a. A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints; 

b. An equilateral triangle of side length 1.0 m with alternating +1-C, –1-C, and +1-C charges 

placed at its vertices;

c. A square of side length 1.0 m with alternating +1-C, –1-C, +1-C, and –1-C charges placed 

at its vertices.

d. Calculate the magnitude and determine the direction of the net electric force on the +1-

C charge placed at the center of configurations in a, b, and c.

Draw the net electric force on a +1-C charge placed at the center of:

A line segment of length 1.0 m with a +1-C charge and a –1-C charge at its endpoints;

If a circuit has a voltage of 195.00 and a resistance of x then the current would be

two conductors having net charges of +20 and -20 have a potential difference of 20 v between them, determine the capacitance of the system

draw a magnetization curve of three types of magnetic materials and hence narrate the curves.

1. Four identical lamps are connected in parallel to a 6 volt battery. What is the voltage drop across each lamp?
2. What happens to the total resistance in a network when more resistors are added to a series circuit ?
3. Four resistors of resistances 3Ω , 4Ω , 5Ω and 6Ω are connected in parallel to a 12 volts source, what is the current through the 5Ω resistor.

1. Three Identical lamps are connected in series to a 12 volt battery. What is the voltage drop across each lamp.?
2. Three 50- Ω resistors are connected in series . The equivalent resistance of the combination is?
3. Two resistors, R1 = 2.0 kΩ and R2= 3.0kΩ are connected in parallel and their combination is connected in series to a fully charged, 150 µF capacitor. When the switch is opened the capacitor begins to discharge. What is the time constant for the discharge?
4. Four 50 Ω resistor are connected in parallel. The equivalent resistance of the combination is?
5. How many 4Ω capacitor must be connected in parallel to have a total resistance of 0.8 Ω ?

A 32−Ω resistor and a 20−Ω resistor are connected in parallel, and the combination is connected across a 240-V dc line. (a) What is the resistance of the parallel combination? (b) What is the total current through the parallel combination? (c) What is the current through each resistor?