58. An electric heater is tested by immersing it in 0.500 kg of water DATA and measuring the time At it takes to raise the water temperature by 10.0°C. The experiment is repeated for different currents I through the heater, and the results are tabulated below. Determine two quantities, based on heating time and current, which, when plotted, will give a straight line. Make your plot, determine a best- fit line, and use it to find the heater's resistance. Hint: You may need to consult Chapter 16. I(A) 2.00 4.00 6.00 8.00 10.0 At (s) 422 112 44.3 28.2 16.9

58. An electric heater is tested by immersing it in 0.500 kg of water DATA and measuring the time At it takes to raise the water temperature by 10.0°C. The experiment is repeated for different currents I through the heater, and the results are tabulated below. Determine two quantities, based on heating time and current, which, when plotted, will give a straight line. Make your plot, determine a best- fit line, and use it to find the heater's resistance. Hint: You may need to consult Chapter 16. I(A) 2.00 4.00 6.00 8.00 10.0 At (s) 422 112 44.3 28.2 16.9

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 13Q: (Indicates a review question, which means it requires only a basic understanding of the material to...

See similar textbooks

Similar questions

sq 4. Maximum surface resistance. Consider a square sheet of side L, thickness d, and electrical resistivity p. The resistance measured between opposite edges of the sheet is called the surface resistance: R = pL/ Ld = p/d, which is independent of the area of the sheet. (R is called the resistance per square and is expected in ohms per square, because p/d has the dimensions of ohms.) If we express p by p=m/ne²t, then Rq=m/ndet. Suppose now that the minimum value of the collision time is determined by scattering from surfaces of the sheet, so that Td/v, where v is the Fermi velocity. Thus the maximum surface resistivity is Rmvp/nd²e². Show for a monatomic metal sheet one atom thickness that sq Rħ/e² = 4.1k, where lkn is 10³ ohms. sq
The output power of a solar PV module is 120 Watts. The number of cells in the moduleis 39. Estimate the following: (Assume any other necessary data)i. Output voltage of the PV moduleii. Output current of the PV moduleiii. Total area of PV moduleiv. Area of one PV cellv. Power output of one PV cell
7. The resistivity of seawater is p= 25 2.cm and the number of charges per volume is 6 × 1020 ions/ cm3 each with charge q 1.6 x 10-19 C. If we fill a tube 2 m long with seawater and connect a 12-volt battery, what is the resulting average drift velocity of the ions (Answer in cm/s)?
mobile battery during a charge cycle are shown in 1.26 The voltage and current at the terminals of an auto- Fig. P1.26. a) Calculate the total charge transferred to the battery. b) Calculate the total energy transferred to the battery. Figure P1.26 v (V) bnohostib 24 Loiwollol sd lo 16 8- 8. 12 16 20 t (ks) i (A) maxi 24 16 8- the che 4 8. 12 16 20 t (ks)
afcopper wlhe (aae.0068)is conneeteed to a 2 volt batt ery at z08 aned contaret cuttent ef aýs A at pew temperatute the same wive contacts a cuYtent ofO.41A (A)is the new bempera ture. than 20°C (13) what the new tempeiature. highel ex Lower
What is the resulting current (in A), if 0.6 C of electrical charge is transferred in 64.2 ms? Provide a numerical answer without unit to at least 2 decimal places.
What is the heat produced in a conductor in 15.5 s if there is a current of 9.5 A and a resistance of 10.9 Q? Round the final answer to a whole number.
The voltage V (volts), current I (amperes), andresistance R (ohms) of an electric circuitare related by the equation V = IR. Suppose that V is increasing atthe rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t denote time in seconds. What is the value of dV/dt?
Q1/ A piece of resistance wire, 15.6 m long and of cross-sectional area 12 mm? at temperature of 0°C, passes a current of 7.9 A when connected to d.c. supply at 240 V. Calculate (a) resistivity of the wire, (b) the current which will flow when the temperature rises to 55 °C. The temperature coefficient of the resistance wire is 0.00029 / °C.
The voltage V (volts), current I (amperes), andresistance R (ohms) of an electric circuitare related by the equation V = IR. Suppose that V is increasing atthe rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t denote time in seconds. What is the value of dI/dt?
During 38 seconds of use, 260 C of charge flow through a microwave oven. Compute the size of the electric current.
A student woants to identify the Resistivity of a conducting wire of unknown material. Resistivity is a property of a material that quantifies how strongly it conducts electric current, and it is formulated as, of p= R4 where R is the Resistance (ohms), A cross-sectional area (meters-squared) and I is the length (meters) of the wire. The student runs an experiment on a cylindrical wire of a length l of 2 centimeters and the cross- sectional area A of the wire is 6.1 centimeters-squared. The measurements of the Current is as below Dataset Voltage (Applied, Volts) Current (Measured, Amperes)