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Two parallel, long wires carry currents i₁ and i₂ with i₁ > i₂. When the current are in the same direction, the magnetic field at a point midway between the wire is 10 mT. If the direction of i₂ is reversed, the field becomes 30mT. The ratio i₁/i₂ is

a)
4
b)
3
c)
2
d)
1

Correct answer is option 'C'. Can you explain this answer?

Ref: https://edurev.in/question/570460/Two-parallel-long-wires-carry-currents-i1-and-i2-with-i1-gt-i2-When-the-current-are-in-the-same-di

Moving Charges And Magnetism - Class 12

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FAQs on Moving Charges And Magnetism - Class 12

1. What are moving charges and magnetism?

Ans. Moving charges and magnetism is a branch of physics that studies the relationship between electric currents or moving charges and the magnetic fields they produce.

2. How do moving charges create a magnetic field?

Ans. Moving charges create a magnetic field around them due to their motion. According to Ampere's law, the magnetic field lines are formed in closed loops around the current-carrying conductor, with the direction determined by the right-hand rule.

3. What is the connection between moving charges and electromagnetism?

Ans. The connection between moving charges and electromagnetism lies in the fact that an electric current is essentially the flow of moving charges. When charges move, they create a magnetic field, and when a magnetic field changes, it induces an electric current.

4. How are moving charges and magnetism relevant in daily life?

Ans. Moving charges and magnetism play a crucial role in various everyday applications. For example, they are utilized in electric motors, generators, transformers, and magnetic resonance imaging (MRI) machines. Additionally, they are essential for understanding phenomena such as the Earth's magnetic field and the behavior of compass needles.

5. What are some practical applications of moving charges and magnetism?

Ans. Some practical applications of moving charges and magnetism include electric power generation, electric motors in appliances and vehicles, magnetic levitation in high-speed trains, magnetic data storage in hard drives, and magnetic particle imaging in medical diagnostics.

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Dec 19, 2024 Last updated

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