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

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 17P: . All of the electrical outlets in a room are connected in a single parallel circuit (Figure 7.38)....

See similar textbooks

Similar questions

All final answer must be up to 3rd decimal places with the appropriate units and sign for direction.An 1800-W toaster, a 1.3-kW electric frying pan, and a 100-W lamp is plugged into the same 20-A, 120-V circuit. (a) What is the total current is drawn by each device, and what is the total resistance of each device? (b) Will this combination trip the circuit breaker?
. All of the electrical outlets in a room are connected in a single parallel circuit (Figure 7.38). The circuit is equipped with a 20-A fuse, and the voltage is 120 V. (a) What is the maximum total power that can be supplied by the outlets without blowing the fuse? (b) How many 1,200-W appliances can be plugged into the sockets without blowing the fuse?
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.) . Six resistors, all having the same temperatures and compositions, are each attached to a battery with voltage V to form a simple circuit. The resistors have different lengths, l, but the same diameters. Rank the circuits according to the current that flows through the resistor from smallest to greatest. If two (or more) circuits have the same current flowing, give them the same ranking. Explain the rationale you used to establish your rankings. Circuit 1: l = 2 cm; V = 3 V Circuit 2: l = 2 cm; V = 6 V Circuit 3: l = 1 cm; V = 3 V Circuit 4: l = 1 cm; V = 6 V Circuit 5: l = 3cm; V = 2 V Circuit 6: l = 3cm; V = 6 V
1. What happened to the voltage across the resistance box as the current through it was increased? What is the relationship between voltage and current when resistance is fixed? 2.What is the current in a 10 ohms resistor due to a potential difference of 40 V? Explain.
Your cellphone typically consumes 400mW of power while used t text. If the phone is operated using a battery with voltage of 3.6 V, what is the current flowing through the cell phone circuitry under these circumstances?
Consider a closed circuit in series that uses a 1000 micro F capacitor. I have drawn a figure below to illustrate this. How does using different resistors (like a 120 ohm & 620 ohm) change the time constant t ? How does this affect the time it takes for the capacitor to charge/discharge? Explain?
Eight holiday lights are connected in series as shown inFig. 5.83.a. If the set is connected to a 120-V source, what is thecurrent through the bulbs if each bulb has an internalresistance of 2818 ?b. Determine the power delivered to each bulb.c. Calculate the voltage drop across each bulb.d. If one bulb burns out (that is, the filament opens),what is the effect on the remaining bulbs?
In the circuit shown, the 2-Ω resistance is the internal resistance of the battery and can be considered to be in series, as shown, with the battery and the 28-Ω load. a. What is the current flowing through the 28-Ω resistor? b. What is the voltage difference across the 28-Ω resistor?
Nichrome wire is used in some radiative heaters. (a) Find the resistance needed if the average power output is to be1.00 kW utilizing 120-V AC. (b) What length of Nichrome wire, having a cross-sectional area of 5.00mm2 , is needed if the operating temperature is 500º C ?(c) What power will it draw when first switched on?
Part of a circuit is shown.a. What is the current through the 3.0 Ω resistor?b. What is the value of the current I?
I need a summary, well explained about resistors in parallel with its mathematical equation. What is a resistor in parallel? Plus What is a resistor in series.
A toaster operating on 120 v uses a current of 9.3 A. What is the toaster power consumption? How much energy does it use in 4 min? What is the total resistance of the heating element wires?