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Exam 29: Direct Current Dc Circuits

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At what rate is thermal energy generated in the 20-Ω resistor when ε = 20 V? At what rate is thermal energy generated in the 20-Ω resistor when ε = 20 V?

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Question 81

If 480 C pass through a 4.0-Ω resistor in 10 min, what is the potential difference across the resistor?

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Question 82

If I = 2.0 A in the circuit segment shown below, what is the potential difference VB − VA? If I = 2.0 A in the circuit segment shown below, what is the potential difference VB − VA?

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Question 83

A circuit consists of 2N resistors, all of resistance R, connected as shown below. A potential difference V is applied to one end, and the other end is at ground potential. The equivalent resistance of the circuit is A circuit consists of 2N resistors, all of resistance R, connected as shown below. A potential difference V is applied to one end, and the other end is at ground potential. The equivalent resistance of the circuit is

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