Magnetic ForceField Magnetic Field NorthSouth Pole Opposites attract
- Slides: 12
Magnetic Force/Field
Magnetic Field • North/South Pole • Opposites attract • Unit: Tesla (T) • Field lines point in direction that a North Pole would feel a force
Earth behaves magnetically as if a bar magnet was located near its center
Magnetic Force on a moving Charge • 1. Charge must be moving • 2. Velocity must have a component perpendicular to the direction of the magnetic field Direction of Force is perpendicular to both velocity and field RHR #1 Fingers = B Field Thumb = velocity or current Palm = Force
Why? (such a weird direction)
What happens near the poles where the charges are not deflected?
Force on a moving Charge F = B * qo(v sin θ) (N) • What is the force on a 2μC charge moving at 4. 3 x 104 m/s perpendicular to a 0. 4 T magnetic field?
A proton (m= 1. 67 x 10 -27 kg, q= 1. 6 x 10 -19 C) is moving with a velocity, v= 6. 3 x 10 -5 m/s, and enters a region with a magnetic field of 0. 4 T. What is the radius of the circle that the charge will move through? What is the final velocity of the charge?
Force on a current in a wire: F = I l B sin(θ) • A square loop (10 cm) of wire has a current of 5 A flowing clockwise and is placed in a 0. 4 T magnetic field directed into the page. What is the magnitude and direction of the force on each segment of the loop? X X X X X X X X
Torque on a loop: t = N I A B sin(φ) • A square loop (10 cm) of wire has a current of 2 A flowing clockwise and is placed in a 0. 75 T magnetic field directed to the right. What is the magnitude and direction of the torque on the loop?
A square loop (10 cm) of wire has a current of 2 A flowing clockwise and is placed in a 0. 75 T magnetic field as shown below. What is the magnitude and direction of the torque on the loop? Top view 60 o
- With magnets likes repel and opposites
- Why not
- Why do opposites attract chemistry
- F=i(lxb)
- Magnetic moment and magnetic field relation
- Weber magnetic field
- Magnetic field
- Electric field and magnetic field difference
- Distinguish between magnetic and nonmagnetic materials
- Aimant pole nord pole sud
- Difference between lap winding and wave winding
- Define north pole and south pole
- Current magnetic north pole