18. For the circuit shown in Figure below, calculate (a) the voltage drop across the 7o resistor, (b) the current through the 30 o resistor, (c) the power developed in the 8 o resistor, (d) the voltage at point X w.r.t. earth, and I the absolute voltage at point X. 182 30 2 12 V 19. If four identical lamps are connected in parallel and the combined resistance is 100 2, find the resistance of one lamp.

18. For the circuit shown in Figure below, calculate (a) the voltage drop across the 7o resistor, (b) the current through the 30 o resistor, (c) the power developed in the 8 o resistor, (d) the voltage at point X w.r.t. earth, and I the absolute voltage at point X. 182 30 2 12 V 19. If four identical lamps are connected in parallel and the combined resistance is 100 2, find the resistance of one lamp.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 51PQ

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