-38 0 A circular region in an xy plane is penetrated by a uniform magnetic field in the positive direc- tion of the z axis. The field's magni- tude B (in teslas) increases with time t (in seconds) according to B = at, where a is a constant. The magni- tude E of the electric field set up by that increase in the magnetic field is given by Fig. 30-57 versus radial dis- tance r; the vertical axis scale is set by E, = 300 µN/C, and the horizontal axis scale is set byr = 4.00 cm. Find a E, r (cm) Figure 30-57 Problem 38. E (uN/C)

-38 0 A circular region in an xy plane is penetrated by a uniform magnetic field in the positive direc- tion of the z axis. The field's magni- tude B (in teslas) increases with time t (in seconds) according to B = at, where a is a constant. The magni- tude E of the electric field set up by that increase in the magnetic field is given by Fig. 30-57 versus radial dis- tance r; the vertical axis scale is set by E, = 300 µN/C, and the horizontal axis scale is set byr = 4.00 cm. Find a E, r (cm) Figure 30-57 Problem 38. E (uN/C)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

3) In a simple boundless dielectric medium (eR = 5), the smooth planar magnetic field vector propagating at 20 MHz is as below. What is the value of the electric field expression at t = 20ns in the direction ax at the origin? Basit sınırsız bir dielektrik ortamda (ER =5), 20MHZ' de yayılan düzgün düzlemsel magnetik alan vektörü H = (6åx – j2ãy)e-j² A/m olarak verilmiştir. Orijinde t=20ns deki Elektrik alan ifadesinin ax yönündeki değeri? O 4pi 3 O 212 O 122 O 322 O 874
A wire of indefinite length crossed by a current ₁ = 0.5 A is placed at a distance r = 50 cm from a second undefined thread pa rallel to it. What current must flow in the second wire and in what direction, so that the force per unit of length between the two wires is r epulsive, and has an intensity equal to 1 N/m? O 5 A, in the same direction as ₁ O 5 A, in direction opposite to ₁ O 10 A, in opposite direction to 1 O 10 A, in the same direction asi₁
In a nonmagnetic material electric field intensity is given by E =16 cos(4*108t- 2x) ay V/m The relative permittivity of the medium will be?
Current Attempt in Progress The figure shows a circular region of radius R = 4.00 cm in which an electric flux is directed out of the plane of the page. The flux encircled by a concentric circle of radius r is given by OE,enc = (0.727 V.m/s) (r/R)t, where r ≤ R and t is in seconds. What is the magnitude of the magnetic field that is induced at radial distances (a)3.00 cm and (b)6.00 cm? (a) Number i (b) Number R Units Units
N:53)
is giver by equatior differential If the electric Charge L dďQ +R dQ dE Intensity of Electric Current; OP = エ de Find PCE) if E(t) = 100 CoS (iOt), C = 16 x 10,L = 1 Ect) = 100 CoS (10t) , C = 16 x 10 L = 1 %3D %3D R R=40,(The inital charge ard inital
A conducting wire 20 cm long bent into rectangular loop 6 cm × 4 cm is placed (kept) perpendicular to the magnetic field of induction 0.5 T. Within 0.1s, the loop is changed to a square and magnetic induction is increased to 1T, what will be the e.m.f. induced in the wire?
5) An electromagnet of square cross-section produces a flux density of 0.45T. If the magnetic flux is 720 uWb find the dimensions of the electromagnet cross-section. [4 cm by 4 cm] ----
3) A loop of wire in the shape of a rectangle of width, w = 18.0 cm and length L = 1.05m. and a long, straight wire carying a current l- 3 00A lie ofa tabletop as shown in the figure below. The distance,h=D1.00 cm (a) The direction of the B field within the area of the rectangle due to the long straight current carrying wire is (state reasoning) () +i (I) (v) -i
1) A lamp emits radiation with an rms magnetic field strength of 3.4 x 107 T. In seconds, calculate the time it would take for a target of area 0.04 m² to absorb 310 J of energy if placed under the lamp.
(b) Suppose you have a cylindrical wire of radius a, where a parallel-plate capacitor is being charged. The gap caused by the capacitor between the wire is an imaginary cylinder with radius a and length d. Current I flows through the wire and charges +Q and -Q accumulate on the parallel plates. [Recall: when charging a capacitor, the energy is stored in the electric field.] What is the magnetic field in this surface? [Hint: Evaluate at s = a.]