The direction of the magnetic field at the centre of a current-carrying circular loop is determined by which of the following?
Right-Hand Thumb Rule
The Right-Hand Thumb Rule (also called Maxwell's corkscrew rule) gives the direction of the magnetic field produced by a current. If you curl the fingers of your right hand along the direction of the current in the loop, the outstretched thumb points in the direction of the magnetic field at the centre of the loop. This is the rule that relates current direction to the field it generates.
Fleming's Left-Hand Rule gives the direction of the force on a current-carrying conductor placed in a magnetic field (the motor rule), not the field of the current itself. Fleming's Right-Hand Rule gives the direction of induced current in electromagnetic induction (the generator rule). Lenz's Law states that an induced current opposes the change in flux that causes it, again about induced current, not about the field of a steady current.
Hence, the direction is determined by the Right-Hand Thumb Rule.
Similar Questions
A single-turn coil of radius R produces a magnetic field B at its centre. If the same wire is wound into a coil of n turns (each of radius R/n) carrying the same current I, what will be the value of the new field at the centre?
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:
