Review The current supplied by a battery slowly decreases as the battery runs down. Suppose that the current as a function of time is I= ( 0.800 A )e-t/6hr Part A What is the total number of electrons transported from the positive electrode to the negative electrode by the charge escalator from the time the battery is first used until it is completely dead? Hνα ΑΣφ ? electrons Submit Request Answer
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- The current supplied by a battery as a function of time is I(t) = Ioe i/T where Io =4.68 A and T =22.7s. Determine the total number of electrons transported from the positive electrode to the negative electrode from the time the battery is first used until it is essentially dead (t = ∞0). (in E electrons, where E = Exa = 1018) I want show all work look at correct answerThe resistance of the skin on a person's finger is typically about 37,000 N. How much voltage would be needed to cause a current of 0.001 A to flow into the finger? (This is about enough current to just be felt by most people.) VThe mean time between collisions in iron is 4.8x10-15 s. ▼ Part A What electron current is driven through a 1.4-mm-diameter iron wire by a 0.070 V/m electric field? Express your answer as a number of electrons per second. 17 ΑΣΦ ie= = Submit Request Answer ? electron/s
- IP Three resistors, R₁ = 20, R₂ = 63 , and R3 = R, are connected in series with a 24.0 V battery. The total current flowing through the battery is 0.18 A. ▼ Part A Find the value of resistance R. Express your answer using two significant figures. R= Submit Part B 15. ΑΣΦ Request Answer Submit V₁, V2, V3 = Find the potential difference across each resistor. Enter your answers numerically separated by commas. Express your answers using two significant figures. 15. ΑΣΦ Request Answer ? 3 Ω ? V1.3x1016 electrons flow through a cross section of silver wire in 310 us with a drift speed of 7.2x10-4 m/s. ▼ Part A What is the diameter of the wire? Express your answer to two significant figures and include the appropriate units. D = Submit μÅ Value Request Answer Ć Units ?n=7*1028 e/m3 u = 8 *10-5 (m/s)(V/m) L = 1.7 m A = 9 * 10*8 m2 v= 14 v a) what is the electric field in the wire? b) using the Ohms law what is the wire resistance R? c) find the resistivity, p, of the wire?
- An aluminum wire 2.053 mm in diameter (12-gauge) carries a current of 1.5 amps. Overall Hint a. What is the number density of charge carriers (electrons) in the wire? Hint for (a) 1 The number density of electrons in the wire is m³ (Use "E" notation to enter your answer in scientific notation. For example, to enter 3.14 × 10¹2, enter "3.14E12".) b. What is the magnitude of the drift velocity of the electrons? Hint for (b) The drift velocity of the electrons is vd = c. What would be the drift velocity if the same gauge copper were used instead of aluminum? Hint for (c) For the same gauge copper wire, the drift velocity would be vd = m/s. m/s. There is a disconnect between how small drift velocities are and how quickly electrical signals travel through wires (nearly at the speed of light). For the moment, treat the two as completely unrelated to each other.The resistors in the circuit below have the following values: R, = 8.10 N, R, = 7.00 N, and R, = 3.50 N. The two batteries each have a voltage of 3.00 V. R2 R1 R3 (a) Find the current in through R2. A (b) How much power do the batteries deliver to R,? W ww1.0x1016 electrons flow through a cross section of silver wire in 300 μs with a drift speed of 7.2x10-4 m/s. Part A What is the diameter of the wire? Express your answer to two significant figures and include the appropriate units. D= Submit ΜΑ Value Request Answer Units ?
- please answer vvA typical lightning bolt may last for 0.197 s and transfer 1.19 x 1040 electrons. Calculate the average current (in A) in the lightning bolt. HINT AThe starter motor of a car engine draws a current of 200 A from the battery. The copper wire to the motor is 4.80 mm in diameter and 1.2 m long. The starter motor runs for 0.610 s until the car engine starts. Part A How much charge passes through the starter motor? Express your answer with the appropriate units. Value Submit ▾ Part B HÅ Submit Value Units Request Answer How far does an electron travel along the wire while the starter motor is on? Express your answer with the appropriate units. μA BRE Units Request Answer ? ?