8d Determine the equivalent capacitance of the combination shown when C = 45 (F. a. 36 UF b . 18 UF C. 34 UF d. 30 UF e. 15 UF 9a The resistivity of gold is 2.44 x 10-8 2 . m (temperature effect is negligible). A gold wire, 1.8 mm in diameter and 14 cm long, carries a current of 480 mA. The power dissipated in the wire is closest to: a. 0.31 mW b. 0.077 mW c. 0.14 m W d. 0.19 m W e. 1.6 m W 10e When a voltage difference is applied to a piece of copper wire, a 5.0 mA current flows. If the copper wire is replaced with a silver wire with twice the diameter of the copper wire. how much current will flow through the silver wire? The lengths of both wires are the same, and the voltage difference remains unchanged. (The resistivity of copper is 1.68 x 10-8 2 . m, and the resistivity of silver is 1.59 x 10-8 2 . m.) a. 1.3 mA b. 19 mA c. 11 mA d. 5.3 mA e. 21 mA 1lc When a 21.0-2 resistor is connected to a battery that has a 7.0-2 internal resistance the terminal voltage of the battery is 9.0 V. Determine the emf of the battery (in V). a. 9.5 b. 10.0 C. 12.0 d. 12.5 e . 7.0