In Fig. we saw earlier a conducting rod of length $L=30.0 \mathrm{~cm}$ moves in a magnetic field $\overrightarrow{\boldsymbol{B}}$ of magnitude $0.450 \mathrm{~T}$ directed into the plane of the figure. The rod moves with speed $v=5.00 \mathrm{~m} / \mathrm{s}$ in the direction shown.When the charges in the rod are in equilibrium, which point, $a$ or $b$, has an excess of positive charge?

In Fig. we saw earlier a conducting rod of length $L=30.0 \mathrm{~cm}$ moves in a magnetic field $\overrightarrow{\boldsymbol{B}}$ of magnitude $0.450 \mathrm{~T}$ directed into the plane of the figure. The rod moves with speed $v=5.00 \mathrm{~m} / \mathrm{s}$ in the direction shown.What is the potential difference between the ends of the rod?

Draw the figure. Then sketch and describe the locus of points on the paper that satisfy the given condition. Point $C$, the locus of points that are no more than 1 inch from $C$.

Two small beads having positive charges $3 q$ and $q$ are fixed at the opposite ends of a horizontal insulating rod, extending from the origin to the point $x=d$. a third small charged bead is free to slide on the rod. At what position is the third bead in equilibrium? Can it be in stable equilibrium?

The conducting rod has length L and is being pulled along horizontal, frictionless conducting rails at a constant velocity $\vec{v}$. The rails are connected at one end with a metal strip. A uniform magnetic field $\vec{B}$, directed out of the page, fills the region in which the rod moves. Assume that L=10 cm, v=5.0 m/s, and B=1.2 T. What are the

magnitude

The labor demand and supply data in the following table relate to a single occupation. Use them to answer the questions that follow. Base your answers on the taste-for-discrimination model

Two closed loops $A$ and $C$ are close to a long wire carrying a current I.While $I$ is decreasing. what is the direction of the net force that the wire exerts on each loop? Explain how you obtain your answer.

In a physics laboratory experiment, a coil with 200 turns enclosing an area of $12 ~\mathrm{cm}^{2}$ is rotated in 0.040 s from a position where its plane is perpendicular to the earth’s magnetic field to a position where its plane is parallel to the field. The earth’s magnetic field at the lab location is $6.0 \times 10^{-5} ~\mathrm{T}$. What is the total magnetic flux through the coil before it is rotated? After it is rotated?

Two closed loops A and C are close to a long wire carrying a current. Find the direction (clockwise or counterclockwise) of the current induced in each of these loops if $I$ is steadily increasing.

A rectangular circuit is moved at a constant velocity of $3.0 \mathrm{~m} / \mathrm{s}$ into, through, and then out of a uniform 1.25-T magnetic field, as shown in Fig. we saw earlier . The magnetic-field region is considerably wider than $50.0 \mathrm{~cm}$. Find the magnitude and direction (clockwise or counterclockwise) of the current induced in the circuit as it is moving out of the field.

A rectangular circuit is moved at a constant velocity of $3.0 \mathrm{~m} / \mathrm{s}$ into, through, and then out of a uniform 1.25-T magnetic field, as shown in Fig. we saw earlier . The magnetic-field region is considerably wider than $50.0 \mathrm{~cm}$. Find the magnitude and direction (clockwise or counterclockwise) of the current induced in the circuit as it is

Two closed loops $A$ and $C$ are close to a long wire carrying a current $I$. Loop $A$ is above the wire, loop $C$ below the wire, and the current $I$ in the wire flows to the right. Find the direction (clockwise or counterclockwise) of the current induced in each loop.

A circular loop in the plane of the paper lies in a 0.75-T magnetic field pointing into the paper. If the loop's diameter changes from 20.0 cm to 6.0 cm in 0.50 s, what is the direction of the induced current.

A circular loop in the plane of the paper lies in a 0.75-T magnetic field pointing into the paper. If the loop's diameter changes from 20.0 cm to 6.0 cm in 0.50 s, what is the magnitude of the average induced emf