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प्रश्न
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
उत्तर
A relative motion between the coil of the wire and the magnet is needed to induce current
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संबंधित प्रश्न
State whether the following statement is true of false:
The axis of earth's imaginary magnet and the geographical axis coincide with each other.
Explain why iron filings which are sprinkled on a sheet of cardboard placed over a bar magnet take up a definite pattern when cardboard is slightly tapped.
Draw magnetic field lines produced around a current-carrying straight conductor passing through cardboard. Name, state and apply the rule to mark the direction of these field lines.
Select the correct option:
The magnetic strength of a bar magnet is:
Repulsion is a surer test of magnetic condition of a body than attraction. Explain.
Draw diagram showing the arrangement of the lines of force for a single magnet.
Write the properties of magnetic lines of force.
Magnetic field lines determine ______.
A student fixes a white sheet of paper on a drawing board. He places a bar magnet in the centre and sprinkles some iron filings uniformly around the bar magnet. Then he taps gently and observes that iron filings arrange themselves in a certain pattern.
- Why do iron filings arrange themselves in a particular pattern?
- Which physical quantity is indicated by the pattern of field lines around the bar magnet?
- State any two properties of magnetic field lines.
