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Lecture_5 - Lecture 5-1 Lecture Physics 219 Question 1 A...

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Lecture 5 - 1 A charge of Q is placed on the inner ball. What is the total charge induced on the inside surface of the outer shell? a) 0 b) Q c) - Q d) - Q/2 e) depends on the net charge on the outer shell Physics 219 – Question 1 – January 26, 2011
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Lecture 5 - 2 Electric Current Current = charges in motion ( ) 0 lim t q I t Δ → Δ Δ Magnitude rate at which net positive charges move across a cross sectional surface Units: [I] = C/s = A (ampere) Current is a scalar, signed quantity, whose sign corresponds to the direction of motion of net positive charges by convention
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