Explanation Ohm’s law: Ohm’s law states that, at a constant temperature the steady current flowing through the conductor is directly proportional to the potential difference across the ends of the conductor and inversely proportional to the resistance of the material. The maximum current will flow in the thread, when the resistance is minimum. Write the relation between resistance and potential difference from the ohm’s law. V = I R (I) Here, the potential difference across the voltage source is V , minimum resistance of the thread is R , and the maximum current flows through the thread is I . Conclusion: Rewrite the equation (I) for current. I = V R (II) The minimum resistance of the thread from the given table is 9 × 10 9 Ω

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends o…

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Chapter 19, Problem 86PP

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The maximum current flows in the thread.

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Chapter 19, Problem 85PP

Chapter 19, Problem 87PP

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Chapter 19 Solutions

Masteringphysics With Pearson Etext - Valuepack Access Card - For College Physics

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The maximum current flows in the thread.

Solution Summary: The author explains Ohm's law, which states that at a constant temperature the steady current flowing through the conductor is directly proportional to the potential difference across the ends

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The maximum current flows in the thread.

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Chapter 19 Solutions