The flexible loop in Figure has a radius of 43.4 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf (in units of mV) in it during this time interval? A B Select one: OA 255.45 OB. 443.80 OC. 820,52 OD. 368.46 OE. 632.16 07:4 EN T-TU

The flexible loop in Figure has a radius of 43.4 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf (in units of mV) in it during this time interval? A B Select one: OA 255.45 OB. 443.80 OC. 820,52 OD. 368.46 OE. 632.16 07:4 EN T-TU

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

Suppose a magnetic field B(t) oscillates with frequency w. A circular loop of copper lies perpendicular to the magnetic field. The radius of the circular loop is r. a. Write down an expression for the magnetic field as a function of time. Determine the induced emf & in the loop of wire and use this to calculate the current generated in the loop as a function of time. b. What is the power dissipation in the wire as a function to time? Make a sketch of this function. What is the average power Pave dissipation in the wire? Hint: what is the average value of the function you sketched? C. Recall that power is a rate of energy transfer, and that power dissipated by a resistor leads to a change in the thermal energy of the material (in this case the copper wire). We can relate a change in thermal energy to a change in temperature by AT where M is the total mass and c ΔΕth Mc is the specific heat capacity of the material (see page 526 for details). Find an expression for a dT - differential…
A single loop of copper wire, lying flat in a plane, has an area of 8.40 cm² and a resistance of 1.80 . A uniform magnetic field points perpendicular to the plane of the loop. The field initially has a magnitude of 0.500 T, and the magnitude increases linearly to 2.00 T in a time of 1.08 s. What is the induced current (in mA) in the loop of wire over this time? mA Need Help? Read It
A square coil of wire has 10 turns and an area of 20 cm^2. The square coil is located in a variable magnetic field whose behavior is shown on the graph. The magnetic field is directed at an angle of 45° relative to the normal to the plane of the square coil. a. What is the average emf induced in the coil in the time interval from t=7.50 s to 10.0 s? b. If the wire has a resistance of 0.75 Ω determine the induced current for the interval from part (a)?
In a region of space where the magnetic field of the earth has a magnitude of 80 mT and is directed 30° below the horizontal, a 50-cm length of wire oriented horizontally along an east-west direction is moved horizontally to the south with a speed of 20 m/s. What is the magnitude of the induced potential difference between the ends of this wire? a. 0.40 mV b. 0.35 mV c. 0.69 mV d. 0.45 mV e. 0.30 mV
Give your answer in SI units and to three significant figures. D Question 1 Two lenses are placed a distance of 20.0 cm apart. The leftmost lens is a converging lens with a focal length of 6 cm while the seconds lens is a diverging lends with a focal length of 10. If an object is placed 2 cm to the left of the converging lens, determine the magnification of the two lenses combined.
The flexible loop in Figure has a radius of 52.6 cm and is in a magnetic field of magnitude 0.150 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.200 s to close the loop, what is the magnitude of the average induced emf (in units of mV) in it during this time interval? t of estion se. Select one: OA. 928.58 OB. 651.90 OC 541.23 OD. 375.23 OE 1205 26 Coul Lis SI O
Microphones are used to convert sound vibrations to electrical signals. In one kind of microphone, sound waves move a coil of wire up and down in a magnetic field, as shown in (Figure 1). The coil shown has a diameter of 1.6 cm and has 100 turns; the 0.010 T magnetic field points radially out from the north pole to the south. Figure S N Wire coil 1 of 1 Part A If the microphone's emf at some instant is 10 mV, what is the speed of the coil? Express your answer with the appropriate units. V = Value Submit μÃ Provide Feedback Request Answer Units www ?
A spatially uniform magnetic field points in the +z-direction and is increasing in strength at the rate of 1.55 T/ms. A. Find the the induced emf in a square conducting loop 18.4 cm on a side lying in the x–y plane, with resistance 18.1 Ω B. Find the current in that square loop
The flexible loop in the figure below has a radius of 14.0 cm and is in a magnetic field of magnitude 0.180 T. The loop is grasped at points A and B and stretched until its area is nearly zero. If it takes 0.180 s to close the loop, what is the magnitude of the average induced emf in it during this time interval? mv B
The figure below shows a flexible loop of metal wire with a radius of 15.0 cm. It lies in a magnetic field pointing into the page with a magnitude of 0.140 T. A physicist grabs the loop at points A and B and rapidly pulls in opposite directions until the loop folds up, such that its area becomes zero. The change in area occurs in a span of 0.190 s. A What is the average induced emf (in mV) in the loop over this time span? mv
A rectangular loop of area A=0.160 m is placed in a region where the magnetic field is perpendicular to the plane of the loop. The magnitude of the field is allowed to vary in time according to B=0.371e 2, where B is in teslas andtis in seconds. What is the value for induced emf ( in units of mV) at t= 4.5 s? Select one: OA. 1.64 O B. 6.26 OC 3.13 OD. 2.02 QE 387 Next page 直

A loop of wire with an area of 0.10 m² is in a uniform magnetic field that has an initial value of 4.0 T. The magnetic field is perpendicular to the plane of the loop, and is decreasing at a constant rate of 0.20 T/s. If the loop has a resistance of 0.500 N, what is the current induced in the loop? O A. - 0.04 A О В. О O C. 0.40 A O D. 0.04 A