Physics Magnetism,Magnetic Effects Of Current Level: High School
A wire carrying a 25-A current has a length 1 = 13 cm between the pole faces of a magnet at an angle O = 60 degrees . The magnetic field is approximately uniform at 0.90 T . What is the magnitude of the force of the wire ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
A circular coil of wire has a diameter of 20.0 cm and contains 12 loops . The current in each loop is 2.5 A and the coil is placed in a 1.8 T external magnetic field . Determine the maximum torque exerted on the coil by the field .
Physics Magnetism,Magnetic Effects Of Current Level: High School
A thin 11 cm long solenoid has a total of 400 turns of wire and carries a current of 2.0 A. Calculate the field inside near the center .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a current carrying conductor in a magnetic field
A long straight wire with density of 50 g/m is suspended by threads, as shown in the Diagram below . A 10 A current in the wire experiences a horizontal magnetic force that deflects it to an equilibrium position angle of 20 degree .
a) What is the tension in the threads ?
b) What is the magnitude of the magnetic force F ?
c) What are the strength and direction of the magnetic field ?
Question Diagram
Physics Magnetism,Magnetic Effects Of Current Level: High School
Solenoid
A solenoid that is 142 cm long has a radius of 1.75 cm and a winding of 1650 turns , it carries a current of 3.46 A . Calculate the magnitude of the magnetic field inside the solenoid ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Solenoid
A 200-turn solenoid having a length of 35 cm and a diameter of 8.4 cm carries a current of 0.24 A . Calculate the magnitude of the magnetic field inside the solenoid ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Magnetic Effect of Current
Two long straight wires are perpendicular to the page and separated by distance d1 = 0.75 cm . Wire 1 carries 6.2 A into the page . What is the current in the wire 2 if the net magnetic field due to the two currents is zero at point P located a distance d2 = 1.50 cm from the wire 2 ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a Moving Charge Particle in a Magnetic Field
Complete the following statement : The magnitude of the magnetic force that acts on the charged particle in a magnetic field is independent ofa) the sign of the charge
b) the magnitude of the charge
c) the magnitude of the magnetic field
d) the direction of motion of the particle
e) the velocity components of the particle .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Magnetic Flux
A 0.50 m length of wire has a current of 0.35 A passing through it .a) What is the magnitude flux density at a perpendicular distance of 1.2 cm from the wire ?
b) If the wire is bent into a circle , what will be the magnetic flux density at the centre of this circle ?
c) The same piece of wire is curled into a solenoid with 210 turns , and this solenoid is 3.0 cm long . What is the magnetic flux density at the centre of the solenoid ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a moving charge in a magnetic field
Consider the 4 particles below traveling as shown in the figure at “click here” the magnitude field B . Notice the sign indicate if the force on the particle will be up , down, into the paper, out of the paper , or zero .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Torque on a coil in a magnetic field
Consider a square coil 1/10 meter on each side . A 2 amp current is flowing around the coil if B = 1.5 Tesla as shown in the figure at “Click here” . Two cases are shown . For each case .a) What is the flux .
b) What is the torque on the coil .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a moving charge in a magnetic field
A proton travels with a speed of 3 x 10 6 m/s at a 90 degree angle with a magnetic field of .3 Tesla (field points in the +y direction)a) What is the magnitude of the force on the proton ?
b) If the angle were changed from 90 degrees to 37 degrees , what is the magnitude of the force on the proton ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Moving Coil Galvanometer
The diagram above shows the basic structure of a moving-coil galvanometer . The moving coil , ABCD , can pivot freely about a vertical axis shown by the dotted line . AB = 0.8 cm and BC = 1.2 cm . A current is flowing in a clockwise direction through the coil .a) What is the direction of the magnetic field between the poles of the field magnets ?
i) left ii) right iii) toward observer iv) away from observer
b) What is the direction of the force acting on the side BC of the coil ?
i) left ii) right iii) toward observer iv) away from observer
c) If the magnitude of the force exerted on the side BC of the coil is 2 x 10^-6 N , calculate the magnitude of the net torque on the coil .
d) To be used as an ammeter , a shunt resistor would have to be connected in parallel with the galvanometer , Explain why ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Magnetic Flux
The figure at “click here” showing a magnetic field B and a five loops . If you put each loop in a magnetic field (without rotating it) and calculate the flux , Will any two of them have the same flux ? Rank the loops from most flux , and explain why ranked them in that order .(loops a = d are circular loops shown edge-on)` .
Physics Magnetism,Magnetic Effects Of Current Level: High School
Force on a moving charge in a magnetic field
If the speed of a charged particle moving in a uniform magnetic field is doubled , what happens to the magnetic force on the particle ?