1. We have 2 cubes, one measuring I' m on one side and the other '2l' m. Find the ratio ofconductivities of the materials of the cubes so that the resistance between any two faces of onecube is the same as that for the other cube.2. How long in seconds must a current of 100 mA flow so as to transfer a charge of 80 C?3. Calculate the cross-sectional area, in mm^2, of a piece of copper wire, 40 m length and having aresistance of 0.25 Q. Take the resistivity of copper as 0.02x10-6 Nm.4. How much work will be done by an electric energy source with a potential difference of 3 kV thatdelivers a current of 1 A for 1 minute.5. A 40 m metallic conductor of cross-sectional area 1 mm? has a resistance of 12 Q. Calculate theconductivity of the metal.6. A heating element supplies 300 kJ in 50 minutes. Find the p.d. across the element when theelement when the current is 2 A.7. The conductance of a certain wire is 0.5S. Another wire of the same material and at the sametemperature has a diameter twice as great and a length three times as great. What is theconductance of the second wire?

NOTE: As per our guidelines we are supposed to answer only one question. Kindly repost other…

Answered: We have 2 cubes, one measuring I' m on…

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter12: Electronic Control Devices

Section: Chapter Questions

Problem 14RQ

See similar textbooks

Similar questions

What is a proton? Where does it normally exist in an atom, and what is its charge?
By doing the " Coloumbs Law Lab " how do you calculate the electric force on suspended balloon and the charge on each balloon? Can you give an sample calculation
A negative charge of -0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m. away. What is the magnitude of the second charge?
Charges A andB are placed a distance of 1.5m from one another. The charge of particle A is 0.3 C whereas the charge of particle B is 0.4 C. Charge B experiences an electrostatic force of FB from charge A. Similarly, charge A experiences an electrostatic force of FA from charge B. What is the ratio of FA to FB?
Which factor is squared in Coulomb's law equation * The charges Distance O Force The constant
A current passing through a terminal is (3t^3-2t^2-t). Calculate the total charge entering the terminal between t = 1 sec and between t = 2 secs. solve the problem with gresa format.
QUESTION 3 E-05, PC-05. While testing of capacitor with the Multimeter it will show value of? will indicate charge voltage. some resistane. Cwill indicate amount of current it has. QUESTION 4 E-05, PC-02. What are the factors affecting the capacitance of capacitor. Area of plates only. O Area of plates and Dielectric media. O Area of plate, dielectric and distance between plates.
(b) Figure 2 shows a plastic rod with a uniform charge -Q. It is bent in a 120° circular arc of radius r and symmetrically aced across an x-axis with the origin at the centre of curvature Pof the rod. Show that electric field, E at point P is given by 0.83Q E = 4T Egr2
nichrome ribbon resistor elements each has a resistance of 1 ohm. the element is made from sheet of nichrome alloy, 0.025 cm thick. if the width 9f the ribbon is 0.3 cm , what is the length is required per element? assume specific resistance of nichrome alloy to be 10g micro ohm-cm
Please consider the choices.
Should say three resistors
Charge is: an electrical property of the atomic particles of which matter consists, measured in coulombs (C). is the rate of change of the charge, measured in Amper (A). In this figure : * 12. 15 11 +12 -13 +1 4 = 15 O 11 +12 = 13 +14 +15 O 11 +12 +l 3 = 1 4 +15

SEE MORE QUESTIONS

Recommended textbooks for you

Electricity for Refrigeration, Heating, and Air C…

Mechanical Engineering

ISBN:

9781337399128

Author:

Russell E. Smith

Publisher:

Cengage Learning