Figure 4 shows the arrangement of 3 resistors, which are connected to 3 sources: 70 V, 60 V and 80 V. Rajah 4 menunjukkan susunan 3 resistor, yang disambungkan pada 3 sumber: 70 V, 60 V dan 80 V. i) Using Kirchhoff's rules, find the current in each resistor shown in Figure 4. Dengan menggunakan Peraturan Kirchoff, cari arus bagi setiap resistor seperti yang ditunjukkan dalam Rajah 4. 4.00 kN b. d R3 70.0 V 60.0 V 80.0 V R2E 3.00 kM 2.00 kN a R1

Figure 4 shows the arrangement of 3 resistors, which are connected to 3 sources: 70 V, 60 V and 80 V. Rajah 4 menunjukkan susunan 3 resistor, yang disambungkan pada 3 sumber: 70 V, 60 V dan 80 V. i) Using Kirchhoff's rules, find the current in each resistor shown in Figure 4. Dengan menggunakan Peraturan Kirchoff, cari arus bagi setiap resistor seperti yang ditunjukkan dalam Rajah 4. 4.00 kN b. d R3 70.0 V 60.0 V 80.0 V R2E 3.00 kM 2.00 kN a R1

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 89CP: Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the...

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Consider a resistor made from a hollow cylinder of carbon as shown below. The inner radius of the cylinder is Ri= 0.20 mm and the outer radius is R0 = 0.30 mm. The length of the resistor is L = 0.90 mm. The resistivity of the carbon is =3.5105 m. (a) Prove that theresistance perpendicular from the axis is R=2L1n(R0Ri) . (b) What is the resistance?
Ralph has three resistors, R1, R2, and R3, connected in series. When connected to an ideal emf source E1, current I1 flows through the resistors. a. If the resistors are instead connected to a second source with E2=2E1, what is the new current through the resistors in terms of the first current? b. Show that, if each resistance is doubled and the resistors are connected in series to the second emf source, the current through the resistors is equal to I1.
A 160F capacitor charged to 450 V is dischargedthrough a 31.2k resistor, (a) Find the time constant.(b)Calculate the temperature increase of the resistor, given that its mass is 2.50 g and its specific heat is 1.67kJ/kg °C,noting that most of the thermal energy is retained in the short time of the discharge, (c) Calculate the new resistance, assuming it is pure carbon. (d) Does this change in resistance seem significant?
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