a 3.00 N a 18.0 V 6.00 2 9.00 N 3.00 N 6.00 N 18.0 V 9.00 N b a Figure 27.9 (Example 27.5) (a) Three resistors connected in parallel. The voltage across each resistor is 18.0 V. (b) Another circuit with three resistors and a battery. Is it equivalent to the circuit in (a)?

a 3.00 N a 18.0 V 6.00 2 9.00 N 3.00 N 6.00 N 18.0 V 9.00 N b a Figure 27.9 (Example 27.5) (a) Three resistors connected in parallel. The voltage across each resistor is 18.0 V. (b) Another circuit with three resistors and a battery. Is it equivalent to the circuit in (a)?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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Concept explainers

Solar Cell

A solar cell, or photovoltaic cell, is a device that converts light into electricity directly through a photovoltaic effect, i.e., a physical and chemical event. It is a type of electromagnetic cell, defined as being used for its electrical properties, current, voltage, or resistance, which vary when exposed to light. Everyday cellular gadgets are usually the building blocks of photovoltaic modules, collectively known as solar panels. Single junction silicon solar cell can generate an open circuit of about 0.5 to 0.6 volts.

Question

Three resistors are connected as shown in 27.9a.
A potential difference of 18.0 V is maintained between points a and b.
(A) Calculate the equivalent resistance of the circuit. (B) Find the current in each resistor. (C) Calculate the power delivered to each resistor and the total power delivered to the combination of resistors.

a
3.00 N
a
18.0 V
6.00 2 9.00 N
3.00 N 6.00 N
18.0 V
9.00 N
b
a
Figure 27.9 (Example 27.5) (a) Three resistors connected in
parallel. The voltage across each resistor is 18.0 V. (b) Another
circuit with three resistors and a battery. Is it equivalent to the
circuit in (a)?

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