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1. Three resistors, 250, 450, and 750, are connected in series, and a 0.51-A current passes through them. What is the equivalent resistance of the circuit? а. 1250 b. 1350 с. 1450 d. 1550 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? 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? b. 15 V c. 12V a. 1.2x10 w b. 2.2х10 w c. 3.2x10*w d. 4.2x10 w

1. Three resistors, 250, 450, and 750, are connected in series, and a 0.51-A current passes through them. What is the equivalent resistance of the circuit? а. 1250 b. 1350 с. 1450 d. 1550 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? 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? b. 15 V c. 12V a. 1.2x10 w b. 2.2х10 w c. 3.2x10*w d. 4.2x10 w

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Multiple Choices: Choose the BEST answer for each item. Show your 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? а. 1250 b. 1350 с. 1450 d. 1550 2. The current in a 47-2 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? 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? а. 1.2х10°и 4. A 16-0 loudspeaker, an 8.0-n loudspeaker, and a 4.0-2 loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. ъ. 15 V с. 12V d. 9V b. 2.2x10*w с. 3.2х105w d. 4.2x10w a. 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? a. 1.0x10'n ъ. 2.0х10'а. c. 3.0x10'n d. 4.0x10'n
Transcribed Image Text:Multiple Choices: Choose the BEST answer for each item. Show your 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? а. 1250 b. 1350 с. 1450 d. 1550 2. The current in a 47-2 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? 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? а. 1.2х10°и 4. A 16-0 loudspeaker, an 8.0-n loudspeaker, and a 4.0-2 loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. ъ. 15 V с. 12V d. 9V b. 2.2x10*w с. 3.2х105w d. 4.2x10w a. 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? a. 1.0x10'n ъ. 2.0х10'а. c. 3.0x10'n d. 4.0x10'n
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