1. A heater consists of a variable resistance connected across a constant voltage supply. To increase the...
Question:
1. A heater consists of a variable resistance connected across a constant voltage supply. To increase the heat output, should you decrease the resistance or increase it?
2. A battery with 12-V emf has a terminal voltage of 11.4 V when it delivers a current of 20 A to the starter of a car. What is the internal resistance r of the battery?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 70% (10 reviews)
1 P 1 R Decre...View the full answer
Answered By
Sandhya Sharma
I hold M.Sc and M.Phil degrees in mathematics from CCS University, India and also have a MS degree in information management from Asian institute of technology, Bangkok, Thailand. I have worked at a international school in Bangkok as a IT teacher. Presently, I am working from home as a online Math/Statistics tutor. I have more than 10 years of online tutoring experience. My students have always excelled in their studies.
4.90+
119+ Reviews
214+ Question Solved
Related Book For
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
Question Posted:
Students also viewed these Electricity and Magnetism questions
-
A battery with an emf of 1.0 V is connected to a 1.0-kΩ resistor and a diode (a nonohmic device) as shown in part (a) of the figure. The current that flows through the diode for a given...
-
A battery has a terminal voltage of 12.0 V when no current flows. Its internal resistance is 2.0 . If a 1.0- resistor is connected across the battery terminals, what is the terminal voltage and what...
-
A battery with no internal resistance is connected across identical light bulbs as shown in Fig. Q26.7. When you close the switch S, will the brightness of bulbs B 1 and B 2 change? If so, how will...
-
Problem 1: The three velocities shown would indicate that the body is not rigid. Given that the body is known to be rigid, one of the three velocities is clearly incorrect. Draw all lines and take...
-
Journalize the following transactions. Assume a perpetual inventory system 201X Jul. 8 Sold merchandise on account, $630, to Ring Co.; terms 3/10, n/30. Cost of merchandise was $390. 12 Purchased...
-
Assuming that the switch in Fig. 7.87 has been in position A for a long time and is moved to position B at t = 0, Then at t = 1 second, the switch moves from B to C. Find v C (t) for t ¥ 0. 10 )...
-
What factors should be considered by the auditor in analyzing occurrences found in the sample?
-
Flynn Company purchased 70 Rinehart Company 12%, 10-year, $1,000 bonds on January 1, 2014, for $70,000. The bonds pay interest semiannually on July 1 and January 1. On January 1, 2015, after receipt...
-
gross margin? Joseph Company recorded sales of $39000 and Cost of Goods Sold of $14000. What is Joseph Company's
-
Presented below are selected transactions at Metlock, Inc. for 2020. Jan. 1 Retired a piece of machinery that was purchased on January 1, 2010. The machine cost $61,800 on that date. It had a useful...
-
1. A wire of length 1 m has a resistance of 0.3 . It is uniformly stretched to a length of 2 m. What is its new resistance? 2. At what temperature will the resistance of a copper wire be 10% greater...
-
Find the power dissipated in a resistor connected across a constant potential difference of 120 V if its resistance is (a) 5 and (b) 10 .
-
On July 31, 2015, the Accounts Receivable balance of Questor Application, Inc. is $320,000. The Allowance for Doubtful Accounts has a $6,400 credit balance. Questor prepares the following aging...
-
XYZ Corporation is expected to pay a $2.00 per share cash dividend to owners of their common stock one year from today. The dividends are paid annually, and are expected to remain at this $2.00 per...
-
Company B has entered into a forward rate agreement (FRA) where it will receive 4% with quarterly compounding (for 3-month period) and pay the 3-month LIBOR rate observed in 2 years. The interest...
-
The Glendon Contractors, Inc., are saving $2000 at the end of every 3 months in order to purchase a new paving machine in six years. Their savings certificates pay 6% p.a. compounded quarterly. How...
-
Anchez , Incorporated , is considering a change in its cash - only sales policy . The new terms of sale would be net one month . The required return is 1.7 percent per month . Current Policy New...
-
Jason invests $5,000 in an investment that earns 20% interest compounded semi-annually, and maturing in 4 years. 18 months later, Rebecka has an opportunity to make an investment that will earn 19%...
-
Boris Bottlemore has just finished celebrating his new job promotion by consuming ten double shots of bourbon in a bar near his home. He staggers from the bar to his home, which is one of twenty...
-
Sandcastles, Inc.s management has recently been looking at a proposal to purchase a new brick molding machine. With the new machine, the company would not have to buy bricks. The estimated useful...
-
Solve the linear programming problems stated in Problems 1734. Minimize and maximize P = 20x + 10y subject to 2x + 3y = 30 2x + y = 26 -2x + 5y = 34 x, y = 0
-
(a) Show that the change in the density p of a substance, when the temperature changes by T, is given by p = BP T. (b) What is the fractional change in density of a lead sphere whose temperature...
-
A uniform rectangular plate of length/ and width w has coefficient of linear expansion a. Show that, if we neglect very small quantities, the change in area of the plate due to a temperature change...
-
Show that for an isotropic solid, B = 3a, if the amount of expansion is small. B and a are the coefficients of volume and linear expansion, respectively.
-
003 The minimal polynomial associated with the matrix 102 01 1 is
-
Question 1: How do strategy and tactical action relate to each other in an organization? Question 2: How can you improve the implementation of strategy in this business organization?...
-
Larkin Corporation sells products for $125 each that have variable costs of $50 per unit. Larkin's annual fixed costs are $430,000. (10 points Total) a. What is Larkin's contribution margin per unit?...
Study smarter with the SolutionInn App