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प्रश्न
On reversing the direction of the current in a wire, the magnetic field produced by it gets ______.
On reversing the direction of current in a wire, the magnetic field produced by it ______.
पर्याय
gets reversed in direction
increases in strength
decreases in strength
remains unchanged in strength and direction
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उत्तर १
On reversing the direction of the current in a wire, the magnetic field produced by it gets reversed.
उत्तर २
On reversing the direction of current in a wire, the magnetic field produced by it gets reversed in direction.
संबंधित प्रश्न
How is the magnetic field due to a straight current carrying wire affected if current in wire is decreased?
How is the magnetic field due to a straight current carrying wire affected if current in wire is reversed?
What is the nature of the lines of force of the magnetic field due to a straight current carrying wire?
Which of the following statement is not correct about the magnetic field?
A magnetic compass needle is placed in the plane of paper near point A as shown in Figure. In which plane should a straight current carrying conductor be placed so that it passes through A and there is no change in the deflection of the compass? Under what condition is the deflection maximum and why?
AB is a current carrying conductor in the plane of the paper as shown in Figure. What are the directions of magnetic fields produced by it at points P and Q? Given r1 > r2, where will the strength of the magnetic field be larger?
It is established that an electric current through a metallic conductor produces a magnetic field around it. Is there a similar magnetic field produced around a thin beam of moving
- alpha particles,
- neutrons? Justify your answer.
These consist of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
Assertion: On freely suspending a current – carrying solenoid, it comes to rest in Geographical N-S direction.
Reason: One end of current carrying straight solenoid behaves as a North pole and the other end as a South pole, just like a bar magnet.
A compass needle is placed near a current carrying wire. State your observations for the following cases and give reasons for the same in each case -
- Magnitude of electric current in wire is increased.
- The compass needle is displaced away from the wire.
- Assertion: A compass needle is placed near a current-carrying wire. The deflection of the compass needle decreases when the magnitude of the current in the wire is increased.
- Reason: The strength of a magnetic field at a point near the conductor increases by increasing the current.
