One Ampere is defined as current flowing in each of two wires 1 m apart which results in force of exactly 2x107 N per meter of length of each wire. 3% True False
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exactly 2x107 N per meter of length of each wire.
3%
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- In the SI system of units, one coulomb (1 C) is defined to be the charge that passes a point every second when a constant (electric) current of one ampere, also called one amp, (1 A) flows past that point. Thus, one coulomb equals one ampere second (1 C = 1A-s). If Q is the charge and / is the constant (or average) current past a point in a time t, Q=It. An average current of 2.0 A flows through all parts of a wire for 5.0 minutes. How much charge passes by any point in the wire in that time? 10.0 C О В. 120.0 С 600.0 C O D.2.0 C Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and Sub P Type here to search 23The current density in a cylindrical wire of radius 4R is given by J = J.(1 –). Density is parallel to the axis. Find the total current passing through the section perpendicular to the axis. a) I = "J,R² b) I = -4T],R² c) I = -T],R² d) I = -112n],R? e) I = -n],R² 63 2 575 2A current of 9.50 A flows in a conductor for 6.0 s. How much charge passes a given point in the conductor during this time?
- Taking R = 1.20 kΩ and ℰ = 470 V in the figure shown below, determine the magnitude and direction of the current in the horizontal wire between a and e. magnitude ?mAA battery with E = 5.10 V and no internal resistance supplies current to the circuit shown in the figure below. When the double-throw switch S is open as shown in the figure, the current in the battery is 1.00 mA. Wwhen the switch is closed in position a, the current in the battery is 1.22 mA. When the switch is closed in position b, the current in the battery is 1.98 mA. R1 R2 R2 (a) Find the resistance R,. kN (b) Find the resistance R,. kn (c) Find the resistance R,.1) A 5.50 m length of 1.9 mm -diameter wire carries a 780 mA current when 23.0 mV is applied to its ends. The drift velocity is 1.2×10−5 m/s Part D Determine the electric field inside the wire. Express your answer to two significant figures and include the appropriate units. Part E Determine the number n of free electrons per unit volume. Express your answer using two significant figures.
- Physics students, wanted to investigate the forces of attraction (F) between two parallel conductors carrying currents li and l2 (also known as Ampere's Law) The students noticed that as the length of the parallel conductors (/) was increased the force of attraction between the conductors (F) also increased. The data collected is in the |L= SA conductor 1 average separation (d = 0.50m) table: conductor 2 Length, / (m) Force, F (x 10-5 N) 12= 5A 1.00 9.00 1.20 10.8 1.40 12,5 1.60 14.2 1.80 16.2 (iii) On the grid plot the force and length values from the table. (iv) Draw the line of best fit (v) Find the slope of the line of best fit. (c) Use the slope calculated and the Ampere's Law equation to determine the experimental value of the magnetic force constant, k.per minute the electric current is [ ] a) 1.6 A b) 1.6 mA c) 1.6 x 102 A d) 1.6 x 10 A When 900 C of charge passes through a wire in 10 minute, the current in the wire is d) 4 A 3. [ ] a) 2.5 A b) 3.5 A c) 1.5 A per second. This corresponds to an electric current of [ 1 emits 2x1016 electrons b) 1.2 x 10-3 A 4. An electron gun c) 1.2 x 104 A d) 3.2 x 104 A a) 3.2 x 10-3 A In an hydorgen atom electron makes 6.6 x 105 revolutions per second 5. la the1. Determine the magnitudes and directions of the currents through R1 and R2 using Kirchoff's Rule. V₁=9.0V R₁ = 22 92 R₂=1592 V3= 6.0V
- How long would it take to transfer 2.2 C of charge with a current of 11.1 mA? 2.2 x 102 s 1.8 x 102 s Option 4 Option 2 2.0 x 102 s 1.6 x 102 s Option 3 Option 1The current density in a cylindrical wire of radius 3R is given by J = J,(1--). Density is parallel to the axis. Find the total current passing through the section perpendicular to the axis. a) I = b) I = -4TJ,R2 c) I = -J,R2 d) I = -112nJ,R2 e)1 =-J,R 575In the figure below, the blue wire has a current I16 A and the red loop is asquare with sides that are 47 cm long. The distance between the blue wire and wire BC 2.6 cm. Determine the force the blue wire exerts on wire BC and the force the blue wire exerts wire AD, 76 V Force of blue wire on BC= direction of force on BC - Choose diecion Force of blue wire on AD direction of force on AD Choone drection 6.7 0 °c