Podcast
Questions and Answers
Why are magnetic field lines considered closed curves around a magnet?
Why are magnetic field lines considered closed curves around a magnet?
Because the direction of field lines is from the magnet's south pole to its north pole.
What is the significance of drawing magnetic field lines around a magnet?
What is the significance of drawing magnetic field lines around a magnet?
To represent the magnetic field around the magnet visually.
How is the direction of the magnetic field around a magnet defined?
How is the direction of the magnetic field around a magnet defined?
By the direction in which a north pole of a compass needle moves inside it.
How is the relative strength of the magnetic field represented in the pattern of field lines?
How is the relative strength of the magnetic field represented in the pattern of field lines?
How can the deflection of a compass needle along a field line indicate the strength of the magnetic field?
How can the deflection of a compass needle along a field line indicate the strength of the magnetic field?
Why do magnetic field lines not cross each other?
Why do magnetic field lines not cross each other?
What is the purpose of repeating the activity with the straight copper wire and compass needle?
What is the purpose of repeating the activity with the straight copper wire and compass needle?
How can the direction of the magnetic field be determined using a compass needle?
How can the direction of the magnetic field be determined using a compass needle?
What change in the direction of current through the copper wire results in a reversed magnetic field direction?
What change in the direction of current through the copper wire results in a reversed magnetic field direction?
What does the observation of the needle moving towards the west indicate about the magnetic field direction?
What does the observation of the needle moving towards the west indicate about the magnetic field direction?
What happens to the north pole of the compass needle when the current flows from north to south?
What happens to the north pole of the compass needle when the current flows from north to south?
Describe the change in the direction of the needle when the current through the copper wire changes from south to north.
Describe the change in the direction of the needle when the current through the copper wire changes from south to north.
How does an electric current in a rod affect its displacement in a magnetic field?
How does an electric current in a rod affect its displacement in a magnetic field?
How does using a stronger horse-shoe magnet affect the displacement of rod AB?
How does using a stronger horse-shoe magnet affect the displacement of rod AB?
How does increasing the length of rod AB affect its displacement in a magnetic field?
How does increasing the length of rod AB affect its displacement in a magnetic field?
In which direction is a positively charged particle deflected if projected towards west and then deflected towards north by a magnetic field?
In which direction is a positively charged particle deflected if projected towards west and then deflected towards north by a magnetic field?
What technique is used to obtain images of different body parts based on the magnetic fields inside the body?
What technique is used to obtain images of different body parts based on the magnetic fields inside the body?
Which two main organs in the human body produce significant magnetic fields?
Which two main organs in the human body produce significant magnetic fields?
