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
What is the direction of magnetic field lines outside a magnet?
Which of the following statement is correct?
।. Magnetic field has both magnitude and direction.
II. The magnetic field inside a current-carrying straight long solenoid is the same at all points.
The magnetic effect of electric current was discovered by _____.
The important property of magnet which was exploited by navigators and travelers from the ancient times is:
The magnet used to lift and transport heavy loads like big metals, steel girders and scrap iron objects for loading and unloading purposes is known as____.
