With regard to the magnetic field lines, which one among the following statements is NOT correct?
They are always parallel to each other
Magnetic field lines emerge from the north pole and enter the south pole outside a magnet, while inside the magnet they run from the south pole to the north pole, and their density indicates the field's strength. However, field lines are not always parallel to each other — they diverge and converge near the poles — which makes this statement the incorrect one.
Ultrasonic waves are produced by making use of
Which one of the following is not a ferromagnetic material?
Liquids and gases never show
A charged particle moves through a magnetic field B with a velocity v. Which one of the following statements is true for the force (F) experienced by the particle?
The direction of magnetic field at any location on the earth’s surface is commonly specified in terms of ________.
A positively charged particle (alpha-particle) is projected towards west in a horizontal plane. It is deflected towards north in the same plane by a magnetic field. Which one among the following is the direction of the magnetic field?
Two very thin and very long uniform wires, placed very close to each other, carry equal but opposite currents. Point 1 is exactly at the middle of those wires and point 2 is far away from the wires. Which one among the following regarding the net magnetic field produced is correct?
What is the direction of magnetic field lines outside a magnet?
Which of the following statement is correct?
।. Magnetic field has both magnitude and direction.
II. The magnetic field inside a current-carrying straight long solenoid is the same at all points.
The magnetic effect of electric current was discovered by _____.
The important property of magnet which was exploited by navigators and travelers from the ancient times is:
The magnet used to lift and transport heavy loads like big metals, steel girders and scrap iron objects for loading and unloading purposes is known as____.