PHYS 102 Lecture : January 31.doc

A) What is the equivalent resistance in the circuit shown in the figure?

a)  

b)  

c)  

d)  

B) Two 4.0 resistors are connected in parallel, and this combination is connected in series with 3.0 . What is the equivalent resistance of this system?

a)  

b)  

c)  

d)  

C) A number of resistors are connected across points A and B as shown in the figure. What is the equivalent resistance between points A and B?

a)  

b)  

c)  

d)  

e)  

Five resistors of resistances 390 Ω, 300 Ω, 500 Ω, 450 Ω, 450 Ω are taken.

(a) What is the equivalent resistance if these resistors are connected in series?

(b) What is the equivalent resistance if these resistors are connected in parallel?

Consider the circuit shown in Figure .

a.Calculate the equivalent resistance of the 10.0- ohm and 5.00-ohm resistors connected in parallel.

b.Using the result of part (a), calculate the combined resistance of the 10.0-ohm, 5.00-ohm, and 4.00-ohm resistors.

c. Calculate the equivalent resistance of the combined resistance found in part and the parallel 3.00-ohm resistor.

d. Combine the equivalent resistance found in part (c) with the 2.00-ohm resistor.

e. Calculate the total current in the circuit.