For the diagram shown below, a loop moves either into or out of a region of uniform magnetic field. Lenz's Law says that: The original magnetic field is directed_____? and the flux through the loop is changing such that it is_____? This causes an induced magnetic field that is directed______? and an induced current that flows_____ around the loop.
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For the diagram shown below, a loop moves either into or out of a region of uniform magnetic field.
Lenz's Law says that:
The original magnetic field is directed_____? and the flux through the loop is changing such that it is_____? This causes an induced magnetic field that is directed______? and an induced current that flows_____ around the loop.
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- Chapter 30, Concept Question 04 The figure shows two circuits in which a conducting bar is slid at the same speed v through the same uniform magnetic field and along a U- shaped wire. The parallel lengths of the wire are separated by 24 in circuit 1 and by L in circuit 2. The current induced in circuit 1 is counterclockwise. e (2) Is the magnetic field into or out of the page? Into Out of Is the current induced in circuit 2 clockwise or counterclockwise? Counterclockwise Clockwise Is the emf induced in circuit 1 larger than, smaller than, or the same as that in circuit 2? Larger The same as SmallerA conductive loop exists in the plane of the page. A magnetic field directed out of the page begins to decrease in strength over some time interval. What is the direction of the induced current in the conductive loop.A square loop of wire with edge length a sits in a uniform magnetic field as shown in figure 2, where the magnitude of the magnetic field varies with time t according to B = Boe-At2 where Bo and ) are constants. If the loop has resistance R, show that there is a current in the loop of magnitude 2a²\Bote-A² I = R Show that, for small times t, the power dissipated by the loop is approximately given by a*B} (2A + w?)²t² P(t) = R
- Please don't provide handwritten solution .....A thin 50 cm (0.5 m) long metal bar with mass 0.75 kg rests on (but is not attached to) two metallic supports in a uniform 0.45 T magnetic field as shown in the figure. A battery and a 25 Ω resistor in series are connected to the supports.Find the highest voltage the battery can have wihtout breaking the circuit and the initial acceleration of the bar if the resistor decreased resistance to 2 ohms.a bar magnet is brought closer to a conducting wire loop with 7Ω of resistance. As a result a uniform 3 A current is induced in the wire. What is the rate at which the external magnetic flux is changing indies the wire loop? Explain the reasoning behind your selection in detail. A) 5 T m2/sB) 10.5 T m2/sC) 21 T m2/sD) 42 T m2/sE) 84 T m2/s
- Metal detectors use induced currents to sense the presence of any metal—not just magnetic materials such as iron. A metal detector, shown, consists of two coils: a transmitter coil and a receiver coil. A high-frequency oscillating current in the transmitter coil generates an oscillating magnetic field along the axis and a changing flux through the receiver coil. Consequently, there is an oscillating induced current in the receiver coil. If a piece of metal is placed between the transmitter and the receiver, the oscillating magnetic field in the metal induces eddy currents in a plane parallel to the transmitter and receiver coils. The receiver coil then responds to the superposition of the transmitter’s magnetic field and the magnetic field of the eddy currents. Because the eddy currents attempt to prevent the flux from changing, in accordance with Lenz’s law, the net field at the receiver decreases when a piece of metal is inserted between the coils. Electronic circuits detect the…A long fund rival solenoid with 100 turns per cm has a radius of 1.6 cm. Assume the magnetic field it produces is parallel to its axis and is uniform in its interior. A) what is its inductance per meter of length? B) if the current changes as shown on the graph, what potential difference is induced per meter?If the magnitude of B increases while the direction remains unchanged how will the magnetic flux through the coil change? I think the concept is imbedded in the definition of magnetic flux as the determinant of how the flux changes in terms of the function of magnitude of the magnetic field. Actually, I don't understand the concept at all.