An ohmic resistor in a circuit is designed to operate at 120 V (a) If you connect the resistor to a 60 V power source, will the resistor dissipate heat at (1) 2, (2) 4, (3) , or (4) times the designed power Why (b) If the designed power is 90 W at 120 V, but the resistor is connected to a 30 V power supply, what is the power delivered to the resistor

Question: An ohmic resistor in a circuit is designed to operate at 120 V. (a) If you connect the resistor to a 60-V power source, will

An ohmic resistor in a circuit is designed to operate at 120 V.
(a) If you connect the resistor to a 60-V power source, will the resistor dissipate heat at (1) 2, (2) 4, (3) ½, or (4) ¼ times the designed power? Why?
(b) If the designed power is 90 W at 120 V, but the resistor is connected to a 30-V power supply, what is the power delivered to the resistor?

Step by Step Solution

★★★★★

3.25 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a Since P V 2 R if you reduce V by the power is r... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

530-P-M-C-R (378).docx

120 KBs Word File

Students Have Also Explored These Related Electricity and Magnetism Questions!

An ideal steam power plant is designed to operate on the combined reheat and regenerative cycle and to produce a net power output of 10 MW. Steam enters the high-pressure turbine at 8 MPa, 550C, and...

A 500 W heating unit is designed to operate with an applied potential difference of 115 V. (a) By what percentage will its heat output drop if the applied potential difference drops to 110 V? Assume...

A 5-1-kW household range is designed to operate on a 240-V rms sinusoidal voltage, as shown in figure. However, the electrician has mistakenly connected the range to 120V rms, as shown in figure....

37. IE An ohmic resistor in a circuit is designed to operate at 120 V. (a) If you connect the resistor to a 60-V power source, will the resistor dissipate heat at (1) 2, (2) 4, (3) 1/2, or (4) 1/4...

. 1. [-/2 Points] SERCP1 1 17.2.P.006. ASK YOUR TEACHER If 4.00 x 10'3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period of 2.68 h, what is the current in the cell...

Review 2C PHYS 22100 Name Use the sketch shown below to answer the next 3 questions. The sketch shows a region of space with regions of uniform electric potential indicated by dashed lines. Eight...

1: A defibrillator sends a 7.5 A current through the chest of a patient by applying a 12000 V voltage as in the figure. What is the resistance of the path in k? 2: During open-heart surgery, a...

. Create a graphing window by double-clicking the graph icon on the right side of the screen. Display the ChA Voltage on the y-axis and the output current on the x-axis. . Set up the physical circuit...

A group of dc motors is to operate at 220 volts at a place that is 400 ft away from 230-volt mains. What diameter (minimum) of copper wire is to be used in connecting the motors to the main, if the...

uble-clicking the graph icon on the right side of the screen. 0 Create a graphing window by do axis and the output current on the x-axis. . Display the ChA Voltage on the y- . Set up the physical...

N-methyl-1-phenylpropan-2-amine exists as two different stereoisomers. The R enantiomer is legal and found in Vicks Vaporub. The S enantiomer is also known as methamphetamine. Draw the stereochemical...

Three identical cylinders with moments of inertia I = ?MR2 are situated in a triangle as shown in Fig. Find the initial downward acceleration of the top cylinder for the following two cases. Which...

This assignment will help the students to develop specialized skills in analyzing the statement of cash flow as a financial analysis method. This is an individual assignment to be completed by each...

If you were about to write the following reports, where would you gather information? Be prepared to discuss the specifics of each choice. a. You are a peer promoter of a free Sony camera that the...

On a cool morning, when the temperature is 15C, you measure the pressure in your car tires to be 30 psi. After driving 20 mi on the freeway, the temperature of your tires is 45C. What pressure will...

The mercury manometer shown in FIGURE P18.56 is attached to a gas cell. The mercury height h is 120 mm when the cell is placed in an ice-water mixture. The mercury height drops to 30 mm when the...

A diver 50 m deep in 10C fresh water exhales a 1.0-cm diameter bubble. What is the bubbles diameter just as it reaches the surface of the lake, where the water temperature is 20C?

how to write option 5,6,7 PYTHON instructions: 1 - ONLY USE THESE ( loops, if, files, dicts, functions, lists ) 2- if youre not gonna answer the question fully DONT ANSWER IT im sure chegg has better...

Desai Industries is analyzing an average-risk project, and the following data have been developed. Unit sales will be constant, but the sales price should increase with inflation. Fixed costs will...

Need some help with number 2 A researcher wishes to see if there is a difference between the mean number of hours per week that a family with no children participates in recreational activities and a...