What happens when the loop encloses no current? What happens when the loop encloses both positive (out of the screen) and negative (into the screen) current The four sides of the path contribute different amounts to the total integral. Under which circumstances will the contribution from a side be zero? The magnetic field within a solenoid is uniform. By playing around with this simulation, can you explain why that must be the case

What happens when the loop encloses no current? What happens when the loop encloses both positive (out of the screen) and negative (into the screen) current The four sides of the path contribute different amounts to the total integral. Under which circumstances will the contribution from a side be zero? The magnetic field within a solenoid is uniform. By playing around with this simulation, can you explain why that must be the case

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A loop of wire in the shape of a rectangle of width w and length L and a long, straight wire carrying a current I lie on a tabletop as shown in the figure below. (a) Determine the magnetic flux through the loop due to the current I. (Use any variable stated above along with the following as necessary: Mo.) ФВ (b) Suppose the current is changing with time according to I = a + bt, where a and b are constants. Determine the magnitude of the emf (in V) that is induced in the loop if b = 20.0 A/s, h = 1.00 cm, w = 20.0 cm, and L = 1.20 m. v (c) What is the direction of the induced current in the rectangle? O clockwise O counterclockwise O The magnitude is zero. What If? Suppose a constant current of I = 6.00 A flows in the straight wire and the loop moves from an initial position ho = 1.00 cm toward the bottom of the figure at a constant speed of v = 16.0 cm/s. (d) What is the magnitude of the induced emf (in V) in the loop 1.00 s after it begins to move? V (e) What is the direction of the…
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In a certain region of empty space, Ez = at, where a is a constant, but Ey and Ex are constant in time. a. What is the magnitude and direction of the magnetic curl in this region in terms of a? b. Suppose that, in this particular case, B always points in the +y direction and is zero on the x = 0 plane. Find By as a function of t, x, y, and z. (Hint: the answer is By = Ɛ0μ0ax + C) c. Assume that a = 1000 (N/C) / s. What is the numerical rate at which By increases or decreases with increasing x at a given instant of time? Do the units make sense?
A U-shaped conductor is locked in place while a vertically aligned, 3.0m-long cylindrical conductor slides across it to the left with a speed of 4.0m/s. The conductors maintain contact at all times forming a closed loop. An external magnetic field of 3.0T passes through the conductors as shown (in the image) A) At the moment the two conductors form a perfect square, what is the magnetic Flux passing between them? Is this Flux increasing or decreasing? B) What are the directions of the induced current and the induced magnetic field the conductors generate? Explain how you know your answers.
The horizontal loop in the figure is placed in an external magnetic field B pointing downwards. If the external field B is increasing with time, then what is the direction of the induced current in the loop as viewed from above? t B Choose your answer from: Clockwise / Counterclockwise / No induced current
Need Help? mV Sascha Hahn/Shutterstock.com A helicopter (see figure below) has blades of length 3.40 m, extending out from a central hub and rotating at 2.30 rev/s. If the vertical component of the Earth's magnetic field is 50.0 μT, what is the magnitude of emf induced between the blade tip and the center hub? Read It
A loop of wire in the shape of a rectangle of width w and length L and a long, straight wire carrying a current I lie on a tabletop as shown in the figure below. (a) Determine the magnetic flux through the loop due to the current I. (Use any variable stated above along with the following as necessary: H. and r.) (b) Suppose the current is changing with time according to I = a + bt, where a and b are constants. Determine the magnitude of the emf that is induced in the loop if b = 17.0 A/s, h = 1.00 cm, w = 19.0 cm, and L = 1.25 m. V (c) What is the direction of the induced current in the rectangle? O clockwise O counterclockwise O The magnitude is zero.
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In this problem, you will use Lenz's law to explore what happens when an electromagnet is activated a short distance from a wire loop. You will need to use the right-hand rule to find the direction of the induced current. Figure < 1 of 1 Switch open E Iron core 0