Physics
Grade-10
Easy
Question
On reversing the direction of current in a wire, the magnetic field produced by it:
- Gets reversed in direction
- Increases in strength
- Decreases in strength
- Remains unchanged in strength and direction
Hint:
Apply Right hand thumb rule
The correct answer is: Gets reversed in direction
-
The direction of magnetic field in a current carrying wire is perpendicular to the wire and in the direction your fingers curl if you wrap your right-hand around the wire with your thumb in the direction of current. Thus, if current is reversed, the direction of magnetic field is also reversed.
The direction of magnetic field in a current carrying wire is perpendicular to the wire and in the direction your fingers curl if you wrap your right-hand around the wire with your thumb in the direction of current. Thus, if current is reversed, the direction of magnetic field is also reversed.
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