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प्रश्न
What are magnetic field lines?
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उत्तर
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संबंधित प्रश्न
Which of the following statements is incorrect regarding magnetic field lines?
(a) The direction of magnetic field at a point is taken to be the direction in which the north pole a magnetic compass needle points.
(b) Magnetic field lines are closed curves.
(c) If magnetic field lines are parallel and equidistant, they represent zero field strength.
(d) Relative strength of magnetic field is shown by the degree of closeness of the field lines.
A current flows downwards in a wire that passes vertically through a table top. Will the magnetic field lines around it go clockwise or anticlockwise when viewed from above the table?
What is a lodestone?
What is an artificial magnet? State two reasons why do we need artificial magnets .
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
Explain the method of plotting the magnetic field lines by using a small compass needle.
A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.
Select the correct option:
Nickel is a:
Write the properties of magnetic lines of force.
Magnetic field lines determine ______.
