The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.70 A. The radius of cross-section A₁ is r₁ = 0.420 cm. A₁ A2 (a) What is the magnitude of the current density across A₁? A/m² The radius r₂ at A₂ is larger than the radius r₁ at A₁. (b) Is the current at A₂ larger, smaller, or the same? O The current is larger. O The current is smaller. The current is the same. (c) Is the current density at A₂ larger, smaller, or the same? O The current density is larger. O The current density is smaller. O The current density is the same.

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter21: Current And Direct Current Circuits
Section: Chapter Questions
Problem 6P: Figure P21.6 represents a section of a conductor of nonuniform diameter carrying a current of I =...
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The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.70 A. The radius of cross-section A₁ is r₁
= 0.420
cm.
TI
A₁
(a) What is the magnitude of the current density across A₁?
A/m²
Assume A₂
The radius ₂ at A₂ is larger than the radius ₁ at A₁.
(b) Is the current at A₂ larger, smaller, or the same?
The current is larger.
The current is smaller.
The current is the same.
=
I
(c) Is the current density at A₂ larger, smaller, or the same?
The current density is larger.
The current density is smaller.
The current density is the same.
2A₁.
(d) Specify the radius at A2.
mm
(e) Specify the current at A₂.
A
Need Help?
A2
(f) Specify the current density at A₂.
A/m²
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Watch It
Transcribed Image Text:The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.70 A. The radius of cross-section A₁ is r₁ = 0.420 cm. TI A₁ (a) What is the magnitude of the current density across A₁? A/m² Assume A₂ The radius ₂ at A₂ is larger than the radius ₁ at A₁. (b) Is the current at A₂ larger, smaller, or the same? The current is larger. The current is smaller. The current is the same. = I (c) Is the current density at A₂ larger, smaller, or the same? The current density is larger. The current density is smaller. The current density is the same. 2A₁. (d) Specify the radius at A2. mm (e) Specify the current at A₂. A Need Help? A2 (f) Specify the current density at A₂. A/m² Read It Watch It
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