3.7×1020 electrons are flowing past any point in a wire per minute (electron charge = -1.6×10-1⁹ C). (a) How much electric current is flowing through the wire? (b) How many protons are flowing through the wire?.
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- The electric field inside a 70-cm "-long" copper wire is 0.020 V/m. What is the potential difference between the ends of the wire?(a) In electron-volts, how much work does an ideal battery with a 37.0 V emf do on an electron that passes through the battery from the positive to the negative terminal? (b) If 7.24 x 1018 electrons pass through each second, what is the power of the battery? (a) Number (b) Number i Units UnitsYou wish to lift a 50 kg mass up a distance of 20 m. You use an electric motor to do the job that plugs into the wall (120 V). How much charge will flow through the motor to complete this job? (Hint: Potential Energy is equal to mgh)
- In open heart surgery, a much smaller amount of energy will defibrillate the heart. (a) What voltage is applied to the 8 μF capacitor of a heart defibrillator that stores 44 J of energy? V = kV (b) Find the amount of stored charge in mC. mC = Think & Prepare: The heart defibrillator consists of what electrical component?A small light-bulb draws 0.22-A current from a 6-V battery. In 2 min: a) How much energy does the battery supply? b) How many electrons passes through a point in the circut every second?Two identical charges, each 8.45x10-5 coulombs are separated by 0.25 meters. What is the force of repulsion between the charges in newtons? Express your answer in Scientific Notation. Find the attractive force (in newtons) between a 5.10x10-5 coulomb point charge and a -5.87x10-5 coulomb point charge that are separated by 0.74 meters. A heating element with a resistance of 39.58 ohms operates on 55.34 volts. What current (in amps) does it draw? Round your final answer to the two decimal places.