30. Induction and Inductance

According to Faraday's Law, what physical quantity is induced in a closed loop by a changing magnetic field?

According to $Faraday’s$ Law, if a magnetic field through a closed loop increases into the page, what is the direction of the induced current in the loop?

According to Faraday's Law, if the magnetic flux $\Phi$ through a conducting loop in figure 1 is increasing into the page, what is the direction of the induced current in the loop?

According to Faraday's Law, the induced electromotive force ($\mathrm{emf}$) in a closed loop is equal to which of the following quantities?

According to $Faraday’sLaw$, is there an induced current in a $solenoid$ when $magnet1$ is moved away from it?

According to Faraday's Law, which of the following changes will induce an $\mathrm{emf}$ in the counterclockwise direction in a circular loop lying in the plane of the page with the magnetic field directed into the page?

Which of the following correctly lists the three ways in which voltage can be induced in a loop of wire according to $Faraday’sLaw$?

According to Faraday's Law, what does a changing magnetic field induce in a closed loop?

A 2.0 cm×2.0 cm square loop of wire with resistance 0.010 Ω has one edge parallel to a long straight wire. The near edge of the loop is 1.0 cm from the wire. The current in the wire is increasing at the rate of 100 A/s. What is the current in the loop?

A tightly-wound 200-turn rectangular loop has dimensions of 40cm by 70cm. A constant magnetic field of 3.5T points in the same direction as the normal of the loop. If the dimensions of the loop change to 20cm by 35cm over 0.5s, with the number of turns remaining the same, what is the induced EMF on the rectangular loop?

A square conducting wire of side length 4 cm is in a 2 T magnetic field. It rotates such that the angle of the magnetic field to the normal of the square increases from 30° to 60° in 2 s. What is the induced current on the wire if its resistance is 5 mΩ?

A long, straight solenoid with a cross-sectional area of 8.00 cm² is wound with 90 turns of wire per centimeter, and the windings carry a current of 0.350 A. A second winding of 12 turns encircles the solenoid at its center. The current in the solenoid is turned off such that the magnetic field of the solenoid becomes zero in 0.0400 s. What is the average induced emf in the second winding?

The magnetic field B at all points within the colored circle shown in Fig. E29.15 has an initial magnitude of 0.750 T. (The circle could represent approximately the space inside a long, thin solenoid.) The magnetic field is directed into the plane of the diagram and is decreasing at the rate of -0.0350 T/s. If the ring is cut at some point and the ends are separated slightly, what will be the emf between the ends?

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