Ohm's Law ** When an electric heater is turned on, the Nichrome heating element is at 0.00 .C and draws a current of 16.0 A, with a potential difference of 117 V between the ends of the element. The element heats up to 769 .C, with the potential difference constant. Find the final current. The temperature coefficient of resistivity for Nichrome is 4.00 x 10-4 (C)-1.Ohm's Law ** Find the value ofresistance R2 in the gure below. The voltage difference Vat: = 15.0 V, the current I = 1.00 A, and the resistance R1 = 5.00 9. 1; a. R] R2 b What is R2? (Enter the unit ohm) : \fElectric Power; Batteries and AC Sources * Apositive current of 1.00 Acws from the negative to the positive terminal inside a battery that has an emf cf8.00 V. How long does it take for this battery to lose 61.0 J ofchemical energy? To solve this problem it will be necessary to rst determine the rate at which the battery is losing energy. At what rate is the battery losing chemical energy? How long does it take for this battery to loge 61.0 J of chemical energy? Electric Power; Batteries and AC Sources * An electrical outlet for an electric stove provides a potential difference of 249 V, 15113. Find the amplitude of the potential difference of the outlet. Give the equation used for nding the amplitude of anAC voltage signal in terms of the rms voltage (Vr). (Enter Vr as V_r' ) Find the amplitude of the potential diEerenee of the outlet