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QI/A rectangular metal strip has dimensions x=10cm , y=0.5 cm , z=0.2 cm. Determine the ratio of the resistances R, , R,, and R, between the respective pairs of opposite faces. Ans: ( 2500: 6.25: 1)

QI/A rectangular metal strip has dimensions x=10cm , y=0.5 cm , z=0.2 cm. Determine the ratio of the resistances R, , R,, and R, between the respective pairs of opposite faces. Ans: ( 2500: 6.25: 1)

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Tutorial Sheet No.3 Q5 / Find the current in the 22 resistance of the network shown in fig.(5) 4V I les 6V. Q6/ In the circuit of fig.(6). Find the magnitude and direction of the current through the 152 resistance by using kirchhoffs laws. lon + 38r 4odV Fig (6) Q7/ Calculate the current (I) in the circuit shown in fig.(7) 125 A d.04 SL 20A 0.042 30A 20A 0.ol2 0.022 0.032 30A o. 022 25A Fig. (7)
Transcribed Image Text:Tutorial Sheet No.3 Q5 / Find the current in the 22 resistance of the network shown in fig.(5) 4V I les 6V. Q6/ In the circuit of fig.(6). Find the magnitude and direction of the current through the 152 resistance by using kirchhoffs laws. lon + 38r 4odV Fig (6) Q7/ Calculate the current (I) in the circuit shown in fig.(7) 125 A d.04 SL 20A 0.042 30A 20A 0.ol2 0.022 0.032 30A o. 022 25A Fig. (7)
Tutorial Sheet No.2 Q1/A rectangular metal strip has dimensions x=10cm , y=0.5 cm , z=0.2 cm. Determine the ratio of the resistances R, , Ry, and R, between the respective pairs of opposite faces. Ans: ( 2500: 6.25: 1) Q2 / Determine the resistance of metal tube in term of the external diameter D, the internal diameter d , the length e and the resistivity. Calculate the resistance of a copper tube 0.5cm thick and 2m long. The external diameter is 10cm p=1.782.cm Ans: ( 23: 1)MN Q3 / Determine the length ( and diameter d of a cylinder of copper in terms of the volume "V" , resistivity "p" , and resistance between pposite ends "r". Q4 / A coil resistance is wound with 45m of 0.12mm diameter wire resistivity 12x10° Q.m. Calculate the length and diameter of a new resistance wire of resistivity 49x10ʻn.m. to replace the originals. Assume the same conditions of emissivity and cooling. Q5 / The resistance of a platirum thermometer wire measured at 50C°, 200C° and 500C° is 14,20322 , 20.60642 and 32.49002, respectively. Derive an expression for the resistance at t C° to what temperature does a resistance of 50.4 correspond.
Transcribed Image Text:Tutorial Sheet No.2 Q1/A rectangular metal strip has dimensions x=10cm , y=0.5 cm , z=0.2 cm. Determine the ratio of the resistances R, , Ry, and R, between the respective pairs of opposite faces. Ans: ( 2500: 6.25: 1) Q2 / Determine the resistance of metal tube in term of the external diameter D, the internal diameter d , the length e and the resistivity. Calculate the resistance of a copper tube 0.5cm thick and 2m long. The external diameter is 10cm p=1.782.cm Ans: ( 23: 1)MN Q3 / Determine the length ( and diameter d of a cylinder of copper in terms of the volume "V" , resistivity "p" , and resistance between pposite ends "r". Q4 / A coil resistance is wound with 45m of 0.12mm diameter wire resistivity 12x10° Q.m. Calculate the length and diameter of a new resistance wire of resistivity 49x10ʻn.m. to replace the originals. Assume the same conditions of emissivity and cooling. Q5 / The resistance of a platirum thermometer wire measured at 50C°, 200C° and 500C° is 14,20322 , 20.60642 and 32.49002, respectively. Derive an expression for the resistance at t C° to what temperature does a resistance of 50.4 correspond.
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