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The current-versus-voltage behavior of a certain electrical device is shown in Figure OQ21.3. When the potential difference across the device is 2 V, what is its resistance? (a) 1 Ω (b) 3/4 Ω (c) 4/3 Ω (d) undefined (e) none of those answers

Chapter 21, Problem 3OQ, The current-versus-voltage behavior of a certain electrical device is shown in Figure OQ21.3. When



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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

When 110.0 V of potential difference is applied across a lightbulb, its filament develops a resistance of 195 Ω. What is the current through the bulb? 

In the circuit shown in (Figure 1) , E = 31.0 V ,R1 = 4.00 Ω, R2 = 6.00 Ω and R3 = 3.00 Ω .

-1-11 a 3 R R R+

Part A

What is the potential difference Vab between points a and b when the switch S is open?

Express your answer with the appropriate units.

Part B

What is the potential difference Vab between points a and b when the switch Sis closed?

Express your answer with the appropriate units.

Part C

For the 4.00 Ω resistor, calculate the current through the resistor with S open.

Express your answer with the appropriate units.

Part D

For the 4.00 Ω resistor, calculate the current through the resistor with S closed.

Express your answer with the appropriate units.

An automobile starter motor has an equivalent resistance of 0.0500 Ω and is supplied by a 12.0-V battery with a 0.0100- Ω internal resistance,

(a) What is current to the motor?

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(d) Repeat these calculations for when the battery connections are corroded and add 0.0900 Ω to the circuit.

(Significant problems are caused by even small amounts of unwanted resistance in low voltage, high current application.)

 

 

 

 

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