solution. 1. Three resistors, 250, 45n, and 750, are connected in series, and a 0.51-A current passes through them. What is the equivalent resistance of the circuit? a. 1250 d. 1550 ь. 1350 c. 1450 2. The current in a 47-0 resistor is 0.12 A. This resistor is in series with a 28-0 resistor, and the series combination is connected across a battery. What is the voltage of the battery? b. 15 V d. 9V a. 24 V 3. A coffee-maker (140) and a toaster (190) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances when both are turned on? с. 12V d. 4.2x10*w 4. A 16-0 loudspeaker, an 8.0-n loudspeaker, and a 4.0-0 loudspeaker are connected in parallel across the terminals of an amplifier. а. 1.2х10*w b. 2.2х10*w с. 3.2х10*w Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. а. 0.340 5. A 60.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 25 V, what is the resistance R b. 0.440 c. 0.540 d. 0.640 of the resistor? а. 1.0х10'п b. 2.0x10'n c. 3.0x10'n d. 4.0x10'n

solution. 1. Three resistors, 250, 45n, and 750, are connected in series, and a 0.51-A current passes through them. What is the equivalent resistance of the circuit? a. 1250 d. 1550 ь. 1350 c. 1450 2. The current in a 47-0 resistor is 0.12 A. This resistor is in series with a 28-0 resistor, and the series combination is connected across a battery. What is the voltage of the battery? b. 15 V d. 9V a. 24 V 3. A coffee-maker (140) and a toaster (190) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances when both are turned on? с. 12V d. 4.2x10w 4. A 16-0 loudspeaker, an 8.0-n loudspeaker, and a 4.0-0 loudspeaker are connected in parallel across the terminals of an amplifier. а. 1.2х10w b. 2.2х10w с. 3.2х10w Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. а. 0.340 5. A 60.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 25 V, what is the resistance R b. 0.440 c. 0.540 d. 0.640 of the resistor? а. 1.0х10'п b. 2.0x10'n c. 3.0x10'n d. 4.0x10'n

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter7: Parallel Circuits

Section: Chapter Questions

Problem 3PP: Using the rules for parallel circuits and Ohmslaw, solve for the missing values....

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