CHAPTER 11 DRILL
- A Let ρS denote the resistivity of silver and let AS denote the cross-sectional
area of the silver wire. Then- D The equation I = implies that increasing V by a factor of 2 will
cause I to increase by a factor of 2. - C Use the equation.
- B The current through the circuit is
Therefore, the voltage drop across R is V = IR = (2 A)(15 Ω) = 30
V.- E The 12 Ω and 4 Ω resistors are in parallel and are equivalent to a