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प्रश्न
A straight wire lying in a horizontal plane carries a current from north to south.
- What will be the direction of magnetic field at a point just underneath it?
- Name the law used to arrive at the answer in part (a).
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उत्तर
- The direction of the magnetic field at a point just underneath is towards the east.
- Right-hand thumb rule.
APPEARS IN
संबंधित प्रश्न
State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.
State the right-hand thumb rule.
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Given below is a circuit to study the magnetic effect of electric current. ABCD is a cardboard kept perpendicular to the conductor XY. A magnetic compass is placed at the point P of the cardboard. P1 and P2 are the positions of the magnetic compass, before and after passing a current through XY respectively.
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- Name the rule that is used to predict the direction of deflection of the magnetic compass.
- State the direction of current in the conductor (X to Y or Y to X) when the circuit is complete.
- If resistance R is increased, then what will be the effect on the magnetic lines of force around the conductor?
