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Practice: Magnetic Field of Current-Carrying Wires Four straight wires, sitting…

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Wize University Physics Textbook (Master) > Newton's Laws of Motion: Forces and Dynamics

Magnetic Force

6 Activities

Practice: Magnetic Field of Current-Carrying Wires


Four straight wires, sitting at each corner of a square, are carrying equal electric currents I perpendicular to the page, as shown below.

a) Find the direction of net magnetic field at the center of square.
b) What is the expression for the magnitude of magnetic field at the center of the square?

Part a)
More Magnetic Force Questions:
EXAMPLE: A positively charged particle of 2.01 x 10-5 C and mass 7.52 x 10-16 kg is travelling at a velocity of 2.0 x 102 m/s in the positive horizontal direction. It enters a uniform magnetic field of 1.50 T which is pointing upward.
How much is the force on the particle as it enters the magnetic field?
The particle starts to move in a circular path. Find the radius of this circular path.
A positively charged particle of 2.01 x 10-5 C and mass 7.52 x 10-16 kg is travelling at a velocity of 2.0 x 102 m/s in the positive horizontal direction. It enters a uniform magnetic field of 1.50 T which is pointing upward.
How much is the force on the particle as it enters the magnetic field?
The particle starts to move in a circular path. Find the radius of this circular path.
Practice: Magnetic Field of Current-Carrying Wires
Four straight wires, sitting at each corner of a square, are carrying equal electric currents I perpendicular to the page, as shown below.
a) Find the direction of net magnetic field at the center of square.
A positively charged particle of 2.01 x 10-5 C and mass 7.52 x 10-16 kg is travelling at a velocity of 2.0 x 102 m/s in the positive horizontal direction. It enters a uniform magnetic field of 1.50 T which is pointing upward.
How much is the force on the particle as it enters the magnetic field?
The particle starts to move in a circular path. Find the radius of this circular path.
An ion with charge of 3.2 x 10-19 C and mass of 6.64 x 10-27 kg starts in a region with E=500 N/C k^\hat k . It moves for Δz=3m k^\Delta z=3m\,\hat k and then experiences a constant magnetic field.
With what speed does it enter the magnetic field region?
What magnetic field is required so that the ion continues with a constant velocity?
An ion with charge of 3.2×10−19 C3.2\times 10^{-19}~\rm C and mass of 6.64×10−27 kg6.64\times 10^{-27}~\rm kg is moving with velocity of 8×104 m/s ȷ^8\times 10^4~\rm m/s~\hat\jmath in a region where there is a uniform magnetic field with intensity of −1 T ȷ^-1~\rm T~\hat\jmath
What is the radius of rotation of the ion?
What is the vector that connects the ion to the center of the circle?
Magnetic Field of Current Carrying Wires
Four straight wires, sitting at corners of a square, are carrying equal electric currents perpendicular to this page, as shown below.
Find the direction of net magnetic field at the center of square.
What is the expression for the magnitude of magnetic field at the center?