How can iron fillings be used to map the magnetic field of a bar magnet?

How can iron fillings be used to map the magnetic field of a bar magnet?
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If you are given some iron fillings and a magnet describe how you would find the poles of the magnet?

Description : If you are given some iron fillings and a magnet describe how you would find the poles of the magnet?

Last Answer : If possible cover the magnet with a sheet of paper and gentlysprinkle the iron filings over the sheet ot paper, they will stickin a pattern following the magnetic "lines of flux" which will ... . Without the paper thefilings will usually become tightly stuck to the magnet, making ithard to clean.

1. Draw magnetic field lines around a bar magnet. -Physics-10

Description : 1. Draw magnetic field lines around a bar magnet. -Physics-10

Last Answer : Magnetic field lines of a bar magnet emerge from the North Pole and terminate at the South Pole as shown in the figure below.

Are the magnetic lines force of a bar magnets strongest at the end of the magnet or in the middle?

Description : Are the magnetic lines force of a bar magnets strongest at the end of the magnet or in the middle?

Last Answer : Feel Free to Answer

Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Description : Magnetic flux linked with a coil can be changed by using an: a. Permanent magnet b.Bar magnet c. Electromagnet d. Horseshoe magnet

Last Answer : b.Bar magne

Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

Description : Define magnetic lines of force. Also draw and show magnetic lines of force of a bar type magnet.

Last Answer : Magnetic Lines of force- These are the imaginary lines (having no physical existence) introduced by Faraday for the pictorial representation of the distribution of a magnetic field.  OR  A line of ... that the tangent at any point gives direction of the resultant force at that point. 

Define magnetic lines of force. Show the magnetic lines of force for bar type magnet.

Description : Define magnetic lines of force. Show the magnetic lines of force for bar type magnet.

Last Answer : Magnetic linens of force is the imaginary lines for magnetic field of magnet around it. These magnetic lines of forces are introduced by Michael Faraday. The direction of lines of force is from N-pole to S-pole. The figure shows lines of force for bar type magnet.

One method of testing for a reversed shunt field coil in a DC generator or motor is by connecting the field to a direct current source, at reduced field rated voltage, and test for polarity using a/an ____________. A. iron bar across each field B. magnetic compass placed near each field C. test lamp across adjacent fields D. copper jumper across the interpole connections

Description : One method of testing for a reversed shunt field coil in a DC generator or motor is by connecting the field to a direct current source, at reduced field rated voltage, and test for ... placed near each field C. test lamp across adjacent fields D. copper jumper across the interpole connections

Last Answer : Answer: B

How do you seperate salt, sand, and iron fillings?

Description : How do you seperate salt, sand, and iron fillings?

Last Answer : Salt would dissolve in water, but sand wouldn’t. Then you could strain out the water and let it evaporate.

Flemings "Left hand Rule" is associated with the effect of – (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Description : Flemings "Left hand Rule" is associated with the effect of – (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Last Answer : (4) Magnetic Field on current Explanation: Whenever, a current carrying conductor comes under a magnetic field, there will be force acting on the conductor and on the other hand, if a conductor ... conductor. In both of the phenomenon, there is a relation between magnetic field, current and force.

Magnetic field can be produced by using A. permanent magnet B. electric current C. temporary magnet D. both A and B

Description : Magnetic field can be produced by using A. permanent magnet B. electric current C. temporary magnet D. both A and B

Last Answer : permanent magnet

What safety actions does the nurse need to take for a patient on oxygen therapy who is undergoing magnetic resonance imaging (MRI)? a) Ensure that no patient care equipment containing metal enters the room where the MRI is located. For patient safety the nurse must make sure no patient care equipment (e.g., portable oxygen tanks) that contains metal or metal parts enters the room where the MRI is located. The magnetic field generated by the unit is so strong that any metal-containing items will be strongly attracted and can literally be pulled away with such great force that they can fly like projectiles towards the magnet.

Description : What safety actions does the nurse need to take for a patient on oxygen therapy who is undergoing magnetic resonance imaging (MRI)? a) Ensure that no patient care equipment containing metal enters the ... oxygen tanks) that contains metal or metal parts enters the room where the MRI is located.

Last Answer : a) Ensure that no patient care equipment containing metal enters the room where the MRI is located. For patient safety the nurse must make sure no patient care equipment (e.g., portable oxygen ... literally be pulled away with such great force that they can fly like projectiles towards the magnet.

In motor a permanent magnet provides: a. Electric field b. electric flux c. magnetic field d. gravitational field

Description : In motor a permanent magnet provides: a. Electric field b. electric flux c. magnetic field d. gravitational field

Last Answer : d. gravitational field

The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these

Description : The pole faces of U-shaped magnet in a moving coil galvanometer are made concave to a) decrease the strength of magnetic field b) create a non-uniform magnetic field c) make the magnetic field radial d) All of these

Last Answer : c) make the magnetic field radial

A superconductor, during its transition to the superconducting state, expels a magnetic field. After which German physicist is this phenomenon which causes a magnet to levitate above a superconductor named?

Description : A superconductor, during its transition to the superconducting state, expels a magnetic field. After which German physicist is this phenomenon which causes a magnet to levitate above a superconductor named?

Last Answer : Walther Meissner.

Flemings “Left hand Rule” is associated with the effect of (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Description : Flemings “Left hand Rule” is associated with the effect of (1) Electric field on current (2) Magnetic field on magnet (3) Electric field on magnet (4) Magnetic Field on current

Last Answer : Magnetic Field on current

The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields (a) meter is surrounded by strong magnetic fields (b) a soft iron shielding is used (c) a plastic shielding is provided (d) a shielding of anon-magnetic material is used

Description : The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields (a) meter is surrounded by strong magnetic fields (b) a soft ... is used (c) a plastic shielding is provided (d) a shielding of anon-magnetic material is used

Last Answer : (b) a soft iron shielding is used

Which of the following terms is used to describe the angular difference between TRUE north and magnetic north on a topographic map? Is it: w) Magnetic field x) Magnetic intensity y) Magnetic inclination z) Magnetic declination

Description : Which of the following terms is used to describe the angular difference between TRUE north and magnetic north on a topographic map? Is it: w) Magnetic field x) Magnetic intensity y) Magnetic inclination z) Magnetic declination

Last Answer : ANSWER: Z -- MAGNETIC DECLINATION

8. How does a solenoid behave like a magnet? Can you determine the north and south poles of a current–carrying solenoid with the help of a bar magnet? Explain. -Physics-10

Description : 8. How does a solenoid behave like a magnet? Can you determine the north and south poles of a current–carrying solenoid with the help of a bar magnet? Explain. -Physics-10

Last Answer : A solenoid is a long coil of circular loops of insulated copper wire. The magnetic field produced around the solenoid when the current is passed through it is similar to the magnetic field ... shows the arrangement of magnetic fields produced around the solenoid when current is passed through it.

1. Why does a compass needle get deflected when brought near a bar magnet? -Physics-10

Description : 1. Why does a compass needle get deflected when brought near a bar magnet? -Physics-10

Last Answer : The compass needle is a small magnet. When the compass needle is brought close to a bar magnet, the magnetic field lines of the compass needle interact with the magnetic field lines of bar magnet, which causes the compass needle to deflect.

If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Description : If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Last Answer : The answer is '6'

If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Description : If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Last Answer : answer:

If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Description : If a bar magnet is cut length wise into 3 parts, what will the total number of poles be? -General Knowledge

Last Answer : answer:

How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Description : How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Last Answer : If you roughly know where North is, tie the bar magnet to a piece of thin string so it balances horizontally and let it dangle. Once it stops spinning and waving about, one end should point North. Mark this end as with an N for north.

How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Description : How will we find out the north pole and south pole of a bar magnet with no markings to indicate poles?

Last Answer : If you roughly know where North is, tie the bar magnet to a piece of thin string so it balances horizontally and let it dangle. Once it stops spinning and waving about, one end should point North. Mark this end as with an N for north.

Magnetism at the centre of a bar magnet is

Description : Magnetism at the centre of a bar magnet is

Last Answer : around- zero

If a bar magnet, tied in the middle with a thread, were suspended at the north pole of the earth, it would take (a) a horizontal position (b) a nearly vertical position with its north pole pointing downward (c) a vertical position with its south pole pointing downward (d) a slanting position

Description : If a bar magnet, tied in the middle with a thread, were suspended at the north pole of the earth, it would take (a) a horizontal position (b) a nearly vertical position with its north pole pointing downward (c) a vertical position with its south pole pointing downward (d) a slanting position

Last Answer : Ans:(b)

Magnetism at the centre of a bar magnet is - (1) minimum (2) maximum (3) zero (4) minimum or maximum

Description : Magnetism at the centre of a bar magnet is - (1) minimum (2) maximum (3) zero (4) minimum or maximum

Last Answer : (3) zero Explanation: The field at the center is not zero, but weak. At the exact center of a magnet the field lines are parallel (straight lines if we draw it). Anywhere else they are slightly divergent.

When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : (4) remains the same Explanation: The poles remains same whether the magnet is cut into two equal half or more and also pole strength remains same but magnetic moment reduces due to decrease in the length of ... is called north pole (N-poled of the magnet and the other end the south pole (S-pole).

In an AC generator, direct current from a separate source is passed through the windings of the rotor _____________. A. by means of slip rings and brushes B. by means of a commutator C. by means of rotating bar magnet D. to minimize the danger of arc over

Description : In an AC generator, direct current from a separate source is passed through the windings of the rotor _____________. A. by means of slip rings and brushes B. by means of a commutator C. by means of rotating bar magnet D. to minimize the danger of arc over

Last Answer : Answer: A

If a bar magnet is cut length wise into 3 parts, what will the total number of poles be?

Description : If a bar magnet is cut length wise into 3 parts, what will the total number of poles be?

Last Answer : 6

When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Description : When a bar magnet is cut into two equal halves, the pole strength of each piece – (1) becomes double (2) becomes half (3) becomes zero (4) remains the same

Last Answer : remains the same

A bar magnet when suspended freely always points in the?

Description : A bar magnet when suspended freely always points in the? (A) East west direction (B) North south direction (C) vertically upwards (D) vertically downwards

Last Answer : A bar magnet when suspended freely always points in the North south direction

The bar magnet has

Last Answer : The bar magnet has the dipole moment.

How could you find out the shape of the magnetic field when two bar magnets are close to each other?

Description : How could you find out the shape of the magnetic field when two bar magnets are close to each other?

Last Answer : You can cover the magnets with paper and scatter iron filings onthe paper. Tap it gently and the filings should take up the patternof the magnetic field. Alternatively, a tiny compass called aplotting ... This ismore tedious but less messy, and can also show you the direction ofthe lines of force.

How could you find out the shape of the magnetic field when two bar magnets are close to each other?

Description : How could you find out the shape of the magnetic field when two bar magnets are close to each other?

Last Answer : You can cover the magnets with paper and scatter iron filings onthe paper. Tap it gently and the filings should take up the patternof the magnetic field. Alternatively, a tiny compass called aplotting ... This ismore tedious but less messy, and can also show you the direction ofthe lines of force.

Had any dental fillings lately? Not crowns; fillings.

Description : Had any dental fillings lately? Not crowns; fillings.

Last Answer : It seems like the fluoride in water is making cavities less common but also you get less as you age, I’ve heard. Many of the problems – crowns, etc. – come from old fillings that have worn out or weakened the tooth.

Do you have any suggestions for interesting fillings for jacket potatoes?

Description : Do you have any suggestions for interesting fillings for jacket potatoes?

Last Answer : answer:Coronation Chicken. (for the benefit of non-UK readers this is pre-cooked chicken mixed with curry and mayonnaise) Chicken and pesto (it's usually a pasta sauce but it's very versatile) Combine a ... it up and use salmon. A bit of ketchup in the mayo turns it into Thousand Island dressing.

What source and strength of radioactivity could cause mercury dental fillings to become radioactive?

Description : What source and strength of radioactivity could cause mercury dental fillings to become radioactive?

Last Answer : answer:In general, things don't become radioactive simply by being exposed to radioactivity. (I hate to say never , because I don't know if an incredibly large radioactive burst ... think it is possible for dental fillings to become radioactive from exposure to (survivable) ionizing radiation.

What are your top 10 favorite donut toppings/fillings?

Description : What are your top 10 favorite donut toppings/fillings?

Last Answer : answer:1. Glazed; Vanilla creme-filled. 2. Cake Donut Old-fashioned; Glazed 3. Krispy Kreme Cake Donut Chocolate. I don’t really care after that. i can’t think of 10.

What are your favourite burrito fillings?

Description : What are your favourite burrito fillings?

Last Answer : The only thing I’d add to your list is SALSA! Yum :)

Painful fillings after a month, normal? can a composite filling be filled up more?

Description : Painful fillings after a month, normal? can a composite filling be filled up more?

Last Answer : Looks like the work performed was something to be desired, since you mentioned that one molar’s filling is already chipped. You may want to get a second opinion from a well recommended dentist.

Anxious about dentist, allergies to composite fillings?

Description : Anxious about dentist, allergies to composite fillings?

Last Answer : Tell the dentist about your concerns before he/she starts the work.

Is there anyone you know who had white/composite fillings and went on to live healthy life?

Description : Is there anyone you know who had white/composite fillings and went on to live healthy life?

Last Answer : Taking care of your teeth (regardless of the dentist you pick) is not just an aesthetic issue, it is about health. Our health begins with the mouth, so poor oral hygiene makes it a perfect ... oral hygiene, including regular tooth brushing (three times a day, or after main meals) and flossing.

Are there any hypoallergenic fillings which have the same feel as traditional feather pillows?

Description : Are there any hypoallergenic fillings which have the same feel as traditional feather pillows?

Last Answer : Yes, most of the pillows that are hypoallergenic are made out of the same materials as feather pillows with the exception that the hypoallergenic pillows have been treated to make them that way.

Are your pie fillings made from real fruit?

Description : Are your pie fillings made from real fruit?

Last Answer : Most pie fillings are made with real fruit. There may be many other artificial ingredients in them though, such as high fructose corn syrup and artificial flavorings.

where can I get chelation therapy in suffolk county new york. I have mercury fillings and fibromyalgia. thanks Kathleen ?

Description : where can I get chelation therapy in suffolk county new york. I have mercury fillings and fibromyalgia. thanks Kathleen ?

Last Answer : AltMedWeb.com has a comprehensive, searchable database for any practioners in your area. You should be provided with a list of practitioners, each of whom you can call and see if they suit your particular chelation therapy needs. Good luck!

What are popular sandwich fillings?

Description : What are popular sandwich fillings?

Last Answer : Their are many popular sandwich fillings. Some of the best one are hot chip butty, steak sandwich, rosemary lamb sandwich, club sandwich, BLT sandwich,toasted chicken and mushroom sandwich.

Where can I get ideas for high-calorie sandwich fillings?

Description : Where can I get ideas for high-calorie sandwich fillings?

Last Answer : If you want high calorie sandwich fillings you should try allrecipes website. You should go just visit a burger joint and they will have all the junk food you would need.

Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Description : Consider the following statements: 1. Bordeaux mixture consists of sodium bromide and lime 2. Toothpastes contain calcium carbonate 3. Zinc amalgam is used in dental fillings 4. Liquid sodium is used as a coolant in nuclear reactors The ... 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

Last Answer : Ans:(c)