A 110-V household circuit that contains an 1800-W microwave, a 1000-W toaster, a
ID: 1511256 • Letter: A
Question
A 110-V household circuit that contains an 1800-W microwave, a 1000-W toaster, and an 800-W coffeemaker is connected to a 20-A fuse. Determine the current. Will the fuse melt if the microwave and the coffeemaker are both on? A 35-W, 55-W, and 85-W resistor are connected in parallel. The resistors are then connected to a 35-V battery. What is the equivalent resistance of the parallel combination? What is the current through each resistor? Resistors R_1, R_2, and R_3 have resistances of 15.0 W. 9.0 W, and 8.0 W respectively. R_1 and R_2 are connected in series, and their combination is in parallel with R3 to form a load across a 6.0-V battery. Draw the circuit diagram. What is the total resistance of the load? What is the current in R_3? What is the potential difference across R_2? A 15.0-Wresistor is connected in series to a 120-V generator and two 10.0-W resistors that are connected in parallel to each other. Draw the circuit diagram. What is the total resistance of the load? What is the magnitude of the circuit current? What is the current in one of the 10.0-Wrcsistors? What is the potential difference across the 15.0-Wresistor?Explanation / Answer
21. I = P/V = 3600W/ 110V = 32.72A
current exceed so fuse will melt
22.(a) R1 = V2/P1 = 35x35/35 =35ohm
R2 = 1225/ 55 = 22ohm9approx)
R3 =1225/85 = 14 ohm(approx)
In parallel 1/R = 1/ R1 + 1/R2 + 1/R3
1/R = 0.15 approx
R = 6.67ohm
(b) current through first resistor =V/R1 =35/35 = 1A
current in second = 35/22 =1.6A
current in third = 35/14 =2.5A
23. (a) ---------R1--------------R2------------
-----------------R3--------------------
------------------6V----------------------
(b) net resistance 1/ R = (R1+ R2 + R3)/(R1 + R2)R3 = 1/6
R = 6ohm
(c) I3 = 6/8 =0.75A
(d) V2 = 3x6/8 = 2.25V
24. (a) ------------15W-----------------120V------------10W-----------
------------------------
(b) R = 15+5 = 20ohm
(c) I = 120/20 = 6A
(d) 3A
(e) 3/4 * 120 = 90V
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.