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chapter 01

# chapter 01 - Chapter 1 Electric Circuit Variables Exercises...

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Chapter 1 – Electric Circuit Variables Exercises Ex. 1.3-1 ( ) 2 2 3 2 3 0 0 0 8 4 A 8 8 ( ) (0) (8 4 ) 0 2 2 C 3 3 t t t i t t t q t i d q d t t τ τ τ τ τ τ = = + = + = = 2 Ex. 1.3-3 ( ) ( ) ( ) 0 0 0 4 4 0 4sin3 0 cos3 cos3 C 3 3 t t t q t i d q d t τ τ τ τ τ = + = + = − = − + 4 3 Ex. 1.3-4 ( ) ( ) ( ) 2 2 0 0 ( ) 2 0 2 2 2 t t dq t i t i t t dt e t < = = > < < Ex. 1.4-1 i 1 = 45 µ A = 45 × 10 -6 A < i 2 = 0.03 mA = .03 × 10 -3 A = 3 × 10 -5 A < i 3 = 25 × 10 -4 A Ex. 1.4-2 ( )( ) = 4000 A 0.001 s 4 C q i t = = Ex. 1.4-3 9 6 3 45 10 9 10 5 10 q i t × = = = × × = 9 µ A Ex. 1.4-4 19 9 19 10 19 9 electron C electron C = 10billion 1.602 10 = 10 10 1.602 10 s electron s e electron C = 10 1.602 10 electron s C 1.602 10 1.602 nA s i     × × ×         × × = × = lectron 1-1

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Ex. 1.6-1 (a) The element voltage and current do not adhere to the passive convention in Figures 1.6-1 B and 1.6-1 C so the product of the element voltage and current is the power supplied by these elements. (b) The element voltage and current adhere to the passive convention in Figures 1.6-1 A and 1.6-1 D so the product of the element voltage and current is the power delivered to, or absorbed by these elements. (c) The element voltage and current do not adhere to the passive convention in Figure 1.6-1 B , so the product of the element voltage and current is the power delivered by this element: (2 V)(6 A) = 12 W. The power received by the element is the negative of the power delivered by the element, -12 W.
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chapter 01 - Chapter 1 Electric Circuit Variables Exercises...

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