The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in thatorder.the end ofirst line%24It exand to the right from thesecond lineo to ato thethenthen goes down and to thding atA.B.Ee vertical position and m gives the slopefunction atRank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.)Which instants have zero emf? Select all that apply.ABO O O O

By Faraday's law emf induces if equal to negative of the time derivative of magnetic flux. And time…

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Faradey’s law states that the EMF induced by a change in magnetic flux depends on the change in magnetic flux with respect to time and number of turns of coils. Mathematically it is defined like the figure. Why do we use ds in the line integral of Faradey’s law to calculate the electric field? Don,t copy from anywhere. Do all calculation step by step .Answer Must be correct.Read question all step.
The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in that order. t A В D E Rank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only " "=" symbols. Do not include any parentheses around the letters or symbols.) frsin Which instants have zero emf? Select all that apply. A В C E
A square coil of wire of side 3.20 cm is placed in a uniform magnetic field of magnitude 2.25 T directed into the page as in the figure shown below. The coil has 33.5 turns and a resistance of 0.780 2. If the coil is rotated through an angle of 90.0° about the horizontal axis shown in 0.335 s, find the following. Rotation axis (a) the magnitude of the average emf induced in the coil during this rotation mV (b) the average current induced in the coil during this rotation mA x Xx X x xx x
A circular loop of wire of radius 16.0 cm is in a magnetic field of 4.50 · 10−3 T directedout of the page. The loop is stretched to make it long and thin, with no area betweenthe wires. The stretching takes 0.850 s. What are the magnitude and direction of theinduced emf in the loop while the loop is being stretched? Explain how you found thedirection, briefly giving all the steps of your thinking.
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 0.230 m radius, 480 turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having its plane perpendicular to a uniform magnetic field. (This is 60 rev/s.) Find the magnetic field strength needed to induce an average emf of 10,000 V. X T
The figure below is a graph of the magnetic flux through a certain coil of wire as a function of time during an interval while the radius of the coil is increased, the coil is rotated through 1.5 revolutions, and the external source of the magnetic field is turned off, in that order. A В IC Rank the emf induced in the coil at the instants marked A through E from the largest positive value to the largest-magnitude negative value. (Use only ">" or "=" symbols. Do not include any parentheses around the letters or symbols.) Which instants have zero emf? Select all that apply. O A В C O E
Two resistors of resistance R1and R2 are placed in series across a battery with voltage V, such that a current I=V/(R1+R2) flows around the circuit. If a coil with inductance L is then placed inparallel withR1, what is the new currentIa long time after the coil has been added? Give your final answer.
please use these description Read the section for moreinformation. The unit ofinductance is the “Henry,”symbolized “H”EMF = Electromotive force= VoltageAnswer must includecorrect units.
At what frequency should a 153-turn, flat coil of cross sectional area of 222 cm² be rotated in a uniform 29-mT magnetic field to have a maximum value of the induced emf equal to 6 V? Write your answer in hertz.
A 100-turn square wire coil of area 0.040 m² rotates about a vertical axis at 1,470 rev/min, as indicated in the figure below. The horizontal component of Earth's magnetic field at the location of the loop is 2.0 x 10-5 T. Calculate the maximum emf (in V) induced in the coil by Earth's field. V 20.0 cm 20.0 cm
QUESTION 7 Refer to the figure in the previous question. What is the emf induced when a 5.48-cm conducting rod attached to a U-shaped conductor moves at 1.56 m/s perpendicular to a magnetic field of strength 14.9 T? Please write the numeric answer in terms of V (volts). Normal format with 3 SF.

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