Use the bar-magnet field-line figure. At point P, the north end of a compass needle points along the field-line arrows. Which way does it point?

In the field-line figure, point P is just outside the N pole. If a compass is placed at P, how does its north end orient?

Point P is just outside the S pole in the bar-magnet figure. Which compass orientation matches the magnetic field at P?

Look at point P below the middle of the bar magnet. A compass needle's north end points along the arrows. Which pole is it generally pointing toward?

In the two-magnet figure, point P lies in the gap. A compass needle's north end points along the field shown by the arrows. Which description is correct?

At point P above the gap in the attracting-magnets figure, how should the north end of a compass needle line up?

In the figure with two facing N poles, point P is near a field line leaving one pole. Which way does a compass north end point there?

Use the figure of two magnets with facing S poles. A compass is placed at P, on the field line that passes through it. Which way does its north end point?

The arrows are hidden in this bar-magnet figure. Using the labeled poles, which way should the outside field line through point P be directed?

A compass is placed at point P on a field line around a bar magnet. Which part of the compass needle points along the arrow shown at P?

In the attracting-poles figure, point P is in the gap and the field-line arrows cross the gap. What compass direction matches the arrows at P?

At point P beside the curved field line around the bar magnet, what is the best description of the magnetic field direction?

The bar-magnet figure marks points A and B. Where is the magnetic field stronger?

Compare points A and B in the bar-magnet field diagram. Which statement about field strength is supported by the line spacing?

In the attracting-magnets figure, points A and B are marked. Where is the magnetic field strongest?

The poles are not marked in this two-magnet figure. What do the field-line arrows show about the two facing ends?

The poles are not marked in this two-magnet figure. What do the field-line arrows show about the two facing ends?

The poles are not marked in this two-magnet figure. Use the field lines in the gap. What must be true of the facing poles?

Use the bar-magnet figure with pole labels hidden. Which rule correctly identifies the north pole from the arrows?

In the attracting-magnets figure, compare point A in the gap with point B outside the pair. Which field is larger in magnitude?

What is a magnetic field?

Which statement about magnetic field lines is correct?

Outside a bar magnet, what is the conventional direction of magnetic field lines?

What does the north end of a compass needle show when placed in a magnetic field?

Which list contains common ferromagnetic materials?

Which object is most likely to be strongly attracted to an ordinary bar magnet?

In a piece of iron, what is a magnetic domain?

Why can an unmagnetized iron paperclip have little overall magnetic field?

What makes a permanent magnet different from a temporary induced magnet?

For a simple bar magnet, where is the magnetic field usually strongest?

Which interaction between magnetic poles is correct?

Why is a magnet described as a magnetic dipole?

A north pole of one bar magnet is brought near the south pole of another. What happens?

Two north poles of bar magnets are pushed toward each other. What force interaction should you expect?

A magnet attracts an unmagnetized iron tack. What is the best explanation?

A copper ring and an iron ring are both held near a refrigerator magnet. Which prediction best matches ordinary classroom observations?

A bar magnet is cut cleanly into two shorter pieces. What poles does each piece have?

A permanent magnet is heated strongly and hammered several times. Why might it become weaker?

A steel screwdriver becomes magnetized after being stroked many times in one direction with a strong magnet. What changed inside the steel?

A bar magnet originally has N on the left and S on the right. It is cut across the middle, and the two cut faces are brought close in their original positions. What happens between the cut faces?