A current of 4.50 A flows in a conductor for 9.50 s. How many electrons pass a given point in the conductor during this time? 0.47 X electrons Need Help? Read It Show My Work (Optional) ( Submit Answer
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- A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any wires used for connections is negligible, (a) What is the current through the resistor? (b) What is the power dissipated by the resistor? (c) What is the power input from the battery; assuming all the electrical power is dissipated by the resistor? (d) What happens to the energy dissipated by the resistor?Check Your Understanding Handheld calculators often use small solar cells to supply the energy required to complete the calculations needed to complete your next physics exam. The current needed to run your calculator can be as small as 0.30 mA. How long would it take for 1.00 C of charge to flow from the solar cells? Can solar cells be used, instead of batteries, to stall traditional internal combustion engines presently used in most cars and trucks?(1) What is a definition of electric current? Label the variables. (2) Suppose that 1016 electrons pass through a cross-section of a wire each second. What is the current in the wire? (3) The current in a wire varies with time according to the relation / = 5+3t where I is in amperes andt is in seconds. What is the number of coulombs of charge that pass a cross section of the wire between t=3s and t=5s?
- The resistance of the skin on a person's finger is typically about 10,000 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.) Need Help? Read It Watch It MY N OTEC [-/2 Points] DETAILS OBINPHYS8 7.P.013.Solve the following: 1. How many nanocoulomb are there in 3.65 billion electrons ? 2. A 25 ampere electric current flows in a conductor in 75 millisecond. Find: a. current equivalent in mA? b. How many charges are transferred ? c. How much work is required to transfer if 3V is applied. 3. A charge of 3.5 µC present in an electric field produces a force of 0.008 Newton. What is the intensity of the electric field ? 4. A charge of 0.6 µC is placed in an electrostatic field whose intensity is 3 x 105 N/C. How strong is the force acting on the charge ? 5. Two objects are both negatively charge with 0.04 coulomb each and 140 cm apart. What kind of force exist Between charges? How much? 6. Find the force that exist between two charges of 8.53 μC and 4.5 µC that 0.25 meters in air?Dexter is maufacturing guy at laboratory inc. he is manufacturing the turnicated cone shape below. Iron has a resistivity of 1.0x10^(-7). Help dexter calculate the resistance between the two circular ends of the tunricated iron conductor below. 2.00 cm 20.0 cm 1 4.00 cm
- The compressor on an air conditioner draws89.6 A when it starts up. The start-up time isabout 0.282 s.How much charge passes a cross-sectionalarea of the circuit in this time?Answer in units of C.Show NUT FOLLOWING OF INSTRUCTIONS Nll ha a deduction of 10 POINTS from the total score. TA charge of 20 C flows out from a battery in 6 seconds and as a result 120 Jor anergy is supplied to a lamp connected across the battery. Ca) What current nasses through the lamp and, (b) potential difference across the lamp? 2. Suppose that each headlight of your car uses 3 A and that you accidentally left the headlights on. How fong will it take for a 12 V battery rated 80 A-hour to be fully discharged? 3. A nerve fiber may be approximated as a cylinder with a diameter of1x 10-5 meters and length 2.0 X 101 meters. Find the resistance of this nerve fiber if ts resistivity is 2.5 0 m. ro having aA conductor has a cross-sectional area of 2.3x10- m2 and the number of free electrons per unit volume is 8.5x1028 electron/m, When the current is 15.2 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1,6x10-19 C. Select one: A. 0.33 B. 48.59 C. 63.79 D. 0.64 E. 0.49
- MODUM asoo > A Moving to another question will save this response. Question 1 of 5 > Question 1 sjujod z Seve Answer The quantity of charge q (in coulombs) that has passed through a surface of area 3.83 cm- varies with time according to the equation q = 4t+ 6, where t is in seconds. What is the value of the current density (in kA/m-) at t= 1.87 s? (Answer in 2 decimal places)FIRST PART Determine the current generated in a circuit if 18.0 C of charge flow per minute. SECOND PART : What amount of charge is stored in a D-cell alkaline battery if it provides a current of 450 mA for 45.6 h? THIRD PART: The capacity of a 9-V rechargeable battery is 625 mA h. What is the battery’s charge capacity in coulombs? FOURTH PART The potential difference across an electric motor is 150.0 V. The potential energy of 600.0 J is converted into kinetic energy. Determine the amount of charge that flowed through the motor.A typical lightning bolt may last for 0.197 s and transfer 1.13 x 1020 electrons. Calculate the average current (in A) in the lightning bolt. HINT Apply the definition of average current. A Click the hint button again to remove this hint.