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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 ______.
विकल्प
gets reversed in direction
increases in strength
decreases in strength
remains unchanged in strength and direction
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.
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संबंधित प्रश्न
Draw a diagram showing the directions of three magnetic field lines due to a straight wire carrying current. Also show the direction of current in the wire.
What is the nature of the lines of force of the magnetic field due to a straight current carrying wire?
In the diagram XY is a straight conductor carrying current in the direction marked by the arrow. The conductor is held vertical by passing it through a horizontal cardboard sheet.
Draw three magnetic lines of force on the board and mark the direction of magnetic field in your diagram. State two factors on which magnitude of magnetic field at a point, depends.
Describe a set up for plotting the magnetic lines of force in: (i) A straight wire, (ii) A circular coil and (iii) A straight solenoid.
Which of the following statement is not correct about the magnetic field?
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?
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.
When is the force experienced by a current-carrying straight conductor placed in a uniform magnetic field.
- Maximum
- Minimum
Two LED bulbs of 12W and 6W are connected in series. If the current through 12W bulb is 0.06A the current through 6W bulb will be ______.
