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प्रश्न
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
विकल्प
1
2
3
4
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उत्तर
2 (Either North or South)
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संबंधित प्रश्न
State Fleming’s left-hand rule.
For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.
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45°
60°
90°
180°
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State whether a magnetic field is associated or not around a moving charge.
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In the example above, coil ABCD is horizontal and the battery is connected as shown.
- For this position, state the direction of the force on the arm AB.
- Why does the current in the arm BC not contribute to the turning force on the coil?
Which of the following pattern correctly describes the magnetic field around a long straight wire carrying current?
