A camera uses a capacitor to quickly deliver energy to the ash, and in between ashes the capacitor is charged by a battery. If the capacitor has a capacitance of 120 uF and it takes 0.50 seconds to charge the capacitor to half of its maximum charge, how much resistance is in the circuit that connects the battery to the capacitor? A) 1.2 kg B) 4.5 kg C) 5.2 kg D) 6.01119 E) 7.8 kg A copper wire with a radius of 0.50 mm carries an electron current of 8.3 X 1018 8]. What is the electric eld inside the Wire? Note: Copper has a conductivity of 6.0 X 107 521 m'l. A) 2.8 x 10-2 V/m B) 4.3 x 10-2 V/m C) 6.7 x 10-2 V/m D) 7.5 x 10-2 V/m E) 9.1 x 10-2 V/m