Question

(A) zero (B) V/R (C) V/2R (D) 2V/R (E) None of these. 6. This circuit contains two batteries. Please note carefully the polarities of the batteries. A student chooses the directions of the currents in the three resistors as shown. Given the choice of current directions, which one of the following equations is correct? (Only one is correct.) A) V1 - V2 - I1R1 - I3R3 = 0 B) V1 + I2R2 - I1R1 = 0 C) V1 - I1R1 - I2R2 = 0 D) V2 + I2R2 - I3R3 = 0 E) V1 + V2 - I1R1 - I2R2 = 0 7. What is the total resistance seen by the battery in the following circuit? Notice that three of the 4 resistors are identical, all with resistance 2R, and the fourth resistor has resistance R. (Another way to ask the question is: The current through the battery is:)

          (A) zero (B) V/R (C) V/2R (D) 2V/R

(E) None of these.

6. This circuit contains two batteries. Please note carefully the polarities of the batteries. A student chooses the directions of the currents in the three resistors as shown. Given the choice of current directions, which one of the following equations is correct? (Only one is correct.)

A) V1 - V2 - I1R1 - I3R3 = 0
B) V1 + I2R2 - I1R1 = 0
C) V1 - I1R1 - I2R2 = 0
D) V2 + I2R2 - I3R3 = 0
E) V1 + V2 - I1R1 - I2R2 = 0

7. What is the total resistance seen by the battery in the following circuit? Notice that three of the 4 resistors are identical, all with resistance 2R, and the fourth resistor has resistance R. (Another way to ask the question is: The current through the battery is:)

(A) zero (B) V/R (C) V/2R (D) 2V/R

(E) None of these.

6. This circuit contains two batteries. Please note carefully the polarities of the batteries. A student chooses the directions of the currents in the three resistors as shown. Given the choice of current directions, which one of the following equations is correct? (Only one is correct.)

A) V1 - V2 - I1R1 - I3R3 = 0
B) V1 + I2R2 - I1R1 = 0
C) V1 - I1R1 - I2R2 = 0
D) V2 + I2R2 - I3R3 = 0
E) V1 + V2 - I1R1 - I2R2 = 0

7. What is the total resistance seen by the battery in the following circuit? Notice that three of the 4 resistors are identical, all with resistance 2R, and the fourth resistor has resistance R. (Another way to ask the question is: The current through the battery is:)

Added by Ines S.

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