Magnetic Field Due to Current Carrying Circular Loop
Will a circular loop of bigger radius produce higher magnetic field than a loop of smaller radius. If current flowing is same give reason.
- A point on the circumference of the loop
- A point outside the loop
- Centre of the loop
- A point close to the center of the loop
A bar magnet falls along the axis of a circular current carrying loop. The direction of current (i) is as indicated. What can be said about the acceleration of the bar magnet when it comes near the coil?
a < g
a = 0
a > g
a = g
- clockwise, counterclockwise
- counterclockwise, clockwise
- clockwise, clockwise
- Both A and B
- A if the current is small
- B if the current is large
“When a magnet is brought close to the loop, the induced current in the loop will be in a direction such that the part of the loop facing the magnet repels the magnet.”
Using the above statement, choose the correct answers.
When the north pole of the magnet is brought close to the loop, the current will be anticlockwise.
When the south pole of the magnet is brought close to the loop, the current will be clockwise.
When the south pole of the magnet is brought close to the loop, the current will be anticlockwise.
When the north pole of the magnet is brought close to the loop, the current will be clockwise.
Change in the number of magnetic field lines pasing through a coil induces an emf in the coil.
- to the direction of the magnetic field
- to the direction opposite to that of magnetic field
- perpendicular to the direction of magnetic field
- to the direction opposite to that of electric current
Explain with the help of a labelled diagram the distribution of magnetic field due to a current through a circular loop. Why is it that if a current carrying coil has n turns the field produced at any point is n times as large as that produced by a single turn?
Around a current carrying wire, there is a
- Straight line
- Magnetic field is zero at the centre
What is the direction of the magnetic field at the centre of a current-carrying loop if the current is in the clockwise direction?
Parallel to the circular face of the coil from left to right
Perpendicular to radius of the coil and coming outward
Parallel to the circular face of the coil from right to left
Perpendicular to radius of the coil and going inward
- greater than
- equal to
- lesser than
- opposite in direction to