(6%) Problem 8: A circuit consisting of 5 resistors is shown in the graph. Their resistances are R1 18 2, R. 35 2, R 81 2, RA 34 2, and R 32 2, and the emf of the battery is E 9.5 V. Suppose the internal resistance of the battery is zero Go A 14% Part (a) Express the equivalent resistance of the combination of R2,R3, and R4 eq 8 9 HOME 5 6 1 2 3 BACKSPACE Feedback Submit Hint I give up! Hints 00 deduction per hint. Hints remaining 1 Feedback 0% deduction per feedback. A 14% Part (b) Express the total resistance of the circuit R in terms of RI, R2, R3, R4, and R A 14% Part (c) Calculate the numerical value of the total resistance R in 2. A 14% Part (d) Express the current I through RI in terms of the emf E and the equivalent resistance R A 14% Part (e) Calculate the numerical value of lin A A 14% Part (f Express the power P dissipated by RI through I and R A 14% Part (g Calculate the numerical value of the power P in W Otheexpertta.com Grade Summary Deductions 100% Potential Submissions Attempts remaining: 20 (90 per attempt) detailed view

## Answer

1/Req234 = 1/R2 + 1/R3 + 1/R4 Req = R2R3R31/R2R3 + R2R4 + R3R4 Req = R1 + R2R3R4/R2R3 + R2R4 + R3R4 + R5 Req = 18 + 14.22 + 32 = 64.22 ohm I = E/Req = E/(R1 + R2R3R4/R2R3 + R2R4 + R3R4 + R5) I = 0.15A P = I^2R1 P = (0.15) ^2 times 18 = 0.39W