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- The human body can exhibit a wide range of resistances to current depending on the path of the current, contact area, and sweatiness of the skin. Suppose the resistance across the chest from the left hand to the right hand is 1.0 106 . (a) How much voltage is required to cause possible heart fibrillation in a man, which corresponds to 500 mA of direct current? (b) Why should rubber-soled shoes and rubber gloves be worn when working around electricity?The thin copper wire with radius of 1.3 mm is wound into a torus shaped coil as revealed in figure.from copper wire 8.75 x 10-2ampere electric current passing though in 4800 sec. Number of free electronsper cubic meter in copper wire is 5.8 x 1028. Calculate magnitude of electron’s drift velocity in thediameter of copper wire. Note: Solve as soon as possibleThe thin copper wire with radius of 1.3 mm is wound into a torus shaped coil as revealed in figure.From copper wire 8.75 x 10-2ampere electric current passing though in 4800 sec. Number of free electronsper cubic meter in copper wire is 5.8 x 1028. Calculate magnitude of electron’s drift velocity in the diameter of copper wire.
- 1. The current passing through a conductor is described by I(t) = I。 e¯t/¹. If lo 2A and T = 0.5 s, how many electrons flow through the conductor during the first 3 seconds? Take e 1.6 × 10-¹⁹ C.The current density in a cylindrical wire of radius 3R is given by /- La -) Density is parallel to the axis. Find the total current passing through the section perpendicular to the axis. b)I = -4nJ,R 2. di 1- -112,R² 575 e)l=- Sectiğiniz cevabn iseretiend gn gerene adar bekleyne Soruvu pos orakmak isterseniz işaretlediğiniz se(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?
- Q) The current density in by a certain region is approximated J² = 1 e-tay Alm² in spherical coordinates. Y 。) How much current is crossing the surface r=5m at = b) Find 3. (r,t) assuming that 3₁70 as 1700? 9 Find an expression for the velocity of charge density? Ans: № 23.1 A b) 1 et c/m³ 22 c) r mlsSuppose we have a steady current / in a wire of cross-sectional area A and length L. The current enters the wire at the end a and leaves at end b. The potential difference across the wire is electric field is given by Va-Vb =Vab = EL Vab =pJ%3p- The LA new expressure for the potential difference is given The SI unit of resistance is one ohm R=p- A by Vab=pL- = IR A Where %3D (1 Q). A resistor is a device made to have a certain resistance. If the potential difference is 6.0 V across a 4.0-k2 resistor, what is the current through it? 1.5 x10-A 15 x10-3A 4 x 10 A 4.0 x 10-3 A Click Save and Submit to save and submit. Click Save All Answers to save all answers.The current density in a cylindrical wire of radius R is given by J = Jo(1 -2). Density is parallel to the axis. Find the total current passing R2. through the section perpendicular to the axis. a) I =JOR² b) I = -4TJ,R? c) I = d) I = -1127JR? n],R? 63 2 575 e) I =
- =9634 Given that the delivered power to a resistor is equal to P when the current flowing in the resistor is la If the current increased to 8.3 la, the delivered power to the resistor will be: Select one: OA. 8.3 P OB. 16.6 P OC. 1378 P OD.0.1P OE 68.9 P Next page 901 PM 4ENG 4/30/2021 Prise Inser Delete FIL 10 Num Lock Backspace 本 6 17 V 12 7 8 9. T. Home Pyup 1 GYH J -IK IL 4 Enter 1 Shift 3 B YN M End Pon 01 AlH Crl Ins Home PgOn EndHi, please help me to solve this problem pls show the solution. Thank you very much. Keep safe QUESTION: A mysterious device found in a forgotten laboratory accumulates charge at a rate specified by the expression q(t) = 9−10t C from the moment it is switched on. Determine the current flowing into the device at t = 1 s,Q2. To determine the galvanometer's internal resistor R. and its maximum electric current Is, corresponding to a maximum deviation of its needle, we mount it in series with a rheostat, as shown in the adjacent figure. R a b son Reosta Galvanometre When the needle makes a maximum deviation Vab = V1 = 5 V and Rr= R1 = 80 k 2. When the needle makes 1/2 maximum deviation Vab = V2 = 2 V and Rp = R2 = 60 ko. When the needle makes 44 maximum deviation Vab = V3 = 2 V and Rr = R3 . V a) Write the relationship between V1, R1, Rc and le. b) Write the relationship between V2, R2, Re and Ic. c) Write the relationship between V3, R3, Re and Ic. d) Determine the values of Re and Ic. e) Determine the value of Rs. Answer: