Which of the following statements is correct?
Statement 1: The magnetic field lines produced around a straight current-carrying conductor form concentric circles centred along the wire. Statement 2: The direction of these magnetic field lines can be determined using the right-hand thumb rule.
Physics MCQ Solution: Magnetic Field Properties
Analyzing Statement 1
Statement 1 asserts that the magnetic field lines generated around a straight current-carrying conductor are concentric circles centered on the wire. This is a fundamental concept in electromagnetism.
When an electric current flows through a straight conductor, it produces a magnetic field that encircles the conductor. Experimental observations and theoretical principles confirm that these field lines form concentric circles, lying in planes perpendicular to the conductor, with the wire at the center.
Analyzing Statement 2
Statement 2 states that the direction of these magnetic field lines can be found using the right-hand thumb rule. This rule is a standard convention used in physics.
To apply the rule, imagine holding the straight conductor in your right hand such that your thumb points in the direction of the conventional current flow. Your fingers, as they curl around the conductor, will indicate the direction of the magnetic field lines.
Conclusion on Correctness
Both statements accurately describe the nature and directional determination of magnetic fields produced by a straight current-carrying conductor.
Statement 1 correctly describes the pattern (concentric circles). Statement 2 correctly identifies the method for determining the direction (right-hand thumb rule).
Therefore, both statements are correct.
Important Questions from Magnetism
How many of the following materials can be attracted by a magnet?
1. Plastic
2. Carbon
3. Aluminium
4. Stainless Steel
Select the correct answer using the code given below:
What will happen if a collection of positive and negative charges are passed at a high speed through a magnetic field which is perpendicular to the direction of motion of the charges? (Assume that both kind of charges are NOT going to recombine)
Which scientist suggested that the magnet must also exert an equal and opposite force on the current-carrying conductor?
Paramagnetic substances are-
The magnetic field lines produced inside a long current-carrying solenoid is similar to that of a:
