QUESTION 3 Suppose that you have a leaf blower that draws 1100 Watts in operation, It is fed by an extension cord that is plugged into a 120 volt outlet by two wires having a resistance of 0.15 ohms each. Because of that resistance, the voltage at the leaf blower is a bit less than 120 volts, but you can still assume that it runs on the same current it would if it were connected to a true 120 volt supply. How much power is dissipated in the extension cord? 25 watts 13 watts O 40 watts 63 watts O 20 watts

QUESTION 3 Suppose that you have a leaf blower that draws 1100 Watts in operation, It is fed by an extension cord that is plugged into a 120 volt outlet by two wires having a resistance of 0.15 ohms each. Because of that resistance, the voltage at the leaf blower is a bit less than 120 volts, but you can still assume that it runs on the same current it would if it were connected to a true 120 volt supply. How much power is dissipated in the extension cord? 25 watts 13 watts O 40 watts 63 watts O 20 watts

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 7STP

See similar textbooks

Similar questions

Refer to Figure 21.7 and the discussion of lights dimming when a heavy appliance comes on. (a) Given the voltage source is 120 V, the wire resistance is 0.400, and the bulb is nominally 75.0 W, what power will the bulb dissipate if a total of 15.0 A passes through the wires when the motor comes on? Assume negligible change in bulb resistance. (b) What power is consumed by the motor?
Show that the power dissipated by the load resistor is maximum when the resistance of the load resistor is equal to the internal resistance of the battery.
Check Your Understanding Circuit breakers in a home are rated in amperes, normally in a range from 10 amps to 30 amps, and are used to protect the residents from harm and their appliances from damage due to large currents. A single 15-amp circuit breaker may be used to protect several outlets in the living room, whereas a single 20-amp circuit breaker may be used to protect the refrigerator in the kitchen. What can you deduce from this about current used by the various appliances?
Find the currents flowing in the circuit in Figure 21.52. Explicitly show how you follow the steps in the Problem-Solving Strategies for Series and Parallel Resistors.
A 120-V circuit in a house is equipped with a 20-A fuse that will b1ow if the current exceeds 20 A. What is the smallest resistance that can be plugged into the circuit without causing the fuse to blow?
Consider the circuit shown below. Write equations for the three currents in terms of R and V.
Can all of die currents going into the junction shown below be positive? 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?
A multi loop circuit has four resistors, all of 2.5 MΩ, and two 12 V batteries asshown. What are the currents thru the resistors in this circuit? Explicitly statetheir directions.
Determine the total power dissipated by three 20Ω resistors when connected (a) in star and (b) in delta to a 440V, 3-phase supply.
You have a single 60-W bulb lit in your room. How doesthe overall resistance of your room’s electric circuit changewhen you turn on an additional 100-W bulb? Explain.
6 If a 12 volt battery is supplied to the parallel connection, solve for the current thru the 4 ohm resistance.