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A straight conductor carrying current I. If the magnetic field at a distance r is 0.4 tesla, then magnetic field at a distance 2r will be
- a)0.4 tesla
- b)0.1 tesla
- c)0.8 tesla
- d)0.2 tesla
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
A straight conductor carrying current I. If the magnetic field at a di...
Explanation:
When a current carrying conductor is placed in a magnetic field, it experiences a force. This force is known as the Lorentz force, and it is given by the formula F = BIL, where F is the force, B is the magnetic field, I is the current, and L is the length of the conductor.
Step 1:
Let us assume that the conductor is a long straight wire, and the current is flowing through it in a straight line.
Step 2:
According to the formula given, the magnetic field at a distance r is given by B = μI/2πr, where μ is the magnetic permeability of the medium.
Step 3:
If we double the distance from the conductor to 2r, then the magnetic field at this distance will be given by B' = μI/2π(2r) = μI/4πr.
Step 4:
Thus, the magnetic field at a distance 2r is half the magnetic field at a distance r. Therefore, the magnetic field at a distance 2r will be 0.2 tesla (0.4 tesla/2).
Hence, the correct answer is option 'D'.
When a current carrying conductor is placed in a magnetic field, it experiences a force. This force is known as the Lorentz force, and it is given by the formula F = BIL, where F is the force, B is the magnetic field, I is the current, and L is the length of the conductor.
Step 1:
Let us assume that the conductor is a long straight wire, and the current is flowing through it in a straight line.
Step 2:
According to the formula given, the magnetic field at a distance r is given by B = μI/2πr, where μ is the magnetic permeability of the medium.
Step 3:
If we double the distance from the conductor to 2r, then the magnetic field at this distance will be given by B' = μI/2π(2r) = μI/4πr.
Step 4:
Thus, the magnetic field at a distance 2r is half the magnetic field at a distance r. Therefore, the magnetic field at a distance 2r will be 0.2 tesla (0.4 tesla/2).
Hence, the correct answer is option 'D'.
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A straight conductor carrying current I. If the magnetic field at a di...
Just apply, Inverse relation of magnetic field B and radius r. You get the answer
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A straight conductor carrying current I. If the magnetic field at a distance r is 0.4 tesla, then magnetic field at a distance 2r will bea)0.4 teslab)0.1 teslac)0.8 teslad)0.2 teslaCorrect answer is option 'D'. Can you explain this answer?
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