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You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic field is the strongest?
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
The shape of the earth's magnetic field resembles that of an imaginary:
(a) U-shaped magnet
(b) Straight conductor carrying current
(c) Current-carrying circular coil
(d) Bar magnet
Figure. shows a bar magnet placed on the table top with its north pole pointing towards south. The arrow shows the north-south direction. There are no other magnets or magnetic materials nearby.
Indicate by crosses, the likely positions of the neutral points.
A battery can supply a charge of 25 × 104 C. If the current is drawn from battery at the rate of 2.5 A, calculate the time in which battery will discharge completely.
Select the correct option:
The magnetic strength of a bar magnet is:
Draw diagram showing the arrangement of the lines of force for a single magnet.
The relation between weber and Tesla is ______.
Name the poles P, Q, Rand S of the magnets in the following figures 'a' and 'b':
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| Figure 'a' | Figure 'b' |
A closely wounded circular coil of radius 5 cm produces a magnetic field of 37.68 × 10-4 T at its center. The current through the coil is ______ A. [Given, number of turns in the coil is 100 and π = 3.14)
