2203

Physics Magnetism,Magnetic Effects Of Current Level: High School

A wire 0.200 m long lies along the y-axis and carries a current of 10.0A in the +y direction . The magnetic field is uniform and has components Bx = 0.300 T , By = -1.20 T, and Bz = 0.500T .

a) Find the components of force on the wire . (The resultant force is the vector sum of the forces due to each component of B .)

b) What is the magnitude of the total force on the wire ?




2202

Physics Magnetism,Magnetic Effects Of Current Level: High School

A particle having a charge q = 2.00 x 10-6C is traveling with a velocity = 1.50 x 103 m.s-1 in the +y direction. The particle experiences a force F due to Fx = 6.00 x 10^-4N, Fy = 0, and Fz = -8.00 x 10^-4N .

a) Determine F , the magnitude of F .

b) Determine Bx, By , and Bz , or at least as many of the three components as possible from the information give .

c) If it is a given in addition that the magnitude of the magnetic field is 0.500 T , determine the remaining components of B .




2201

Physics Magnetism,Magnetic Effects Of Current Level: High School

The force on a charged particle moving in a magnetic field can be computed as the vector sum of the forces due to each separate component of the magnetic field . A particle with a charge of 3.50 x 10^-8C has a velocity of v = 8.00 x 105 m.s-1 in the –x direction . It is moving in a uniform magnetic field with components Bx = +0.200 T , By = -0.500T , and Bz = +0.300 T . What are the components of the force exerted on the particle by the magnetic field .



2200

Physics Magnetism,Magnetic Effects Of Current Level: High School

A particle with initial velocity 6.00 x 103 m.s-1 in the + x-direction enters a region of uniform electric fields . The magnetic field in the region is B = 0.300 T in the –y direction . Calculate the magnitude and direction of the electric field in the region if the particle passes through undeflected for a particle charge .

a) +0.400 x 10^-8C

b) -0.400 x 10^-8C




2199

Physics Magnetism,Magnetic Effects Of Current Level: High School

Magnetic field due to a current carrying conductor

The two wire shown in the figure at ‘click here’ carry currents of 5.00 A in opposite directions and are separated by 10.0 cm . Find the direction and magnitude of the net magnetic field ,

a) at a point midway between the wires

b) at point P1, 10.0 cm to the right of the wires on the right

c) at point P2,20.0 cm to the left of the wires on the left .




2198

Physics Magnetism,Magnetic Effects Of Current Level: High School

A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the velocity selector at a speed of 3.00 x 10^5 m/s and enter a uniform magnetic field of 0.600 T directed perpendicularly to the velocity of the ions . What is the distance between the impact points formed on the photographic plate by singly charged ions of 235 U and 238 U ?



2197

Physics Magnetism,Magnetic Effects Of Current Level: High School

An electron enters a region in which there’s a magnetic field B = 0.1T pointing along the positive Z-axis , and electric field E = 3.5 N/C pointing along the positive Y-axis . If we want the electron to continue traveling in a straight line without changing speed , what should its velocity (magnitude and direction ) be ?



2192

Physics Magnetism,Magnetic Effects Of Current Level: High School

Magnetic field and Magnetic Force

An electron and a alpha particle (a doubly ionized helium atom) both move in a magnetic field in circular paths with the same tangential speed . Compute the ratio of the number of revolutions the electron makes per second to the number made per second by the alpha particle is 6.68 x 10^-27 kg



2189

Physics Magnetism,Magnetic Effects Of Current Level: High School

A lightning bolt may carry a current of 1.00 x 10 to the 4th power Amps for a short time . What is the resulting magnetic field 100 m from the bolt ? Suppose that the bolt extends far above and below the point of observation .



2188

Physics Magnetism,Magnetic Effects Of Current Level: High School

An eight turn coil encloses an elliptical area having a major axis of 40 cm and a minor axis of 30 cm . (The elliptical area is 40 cm high and 30 cm wide on the page). The coile lies in the plane of the page and has a 6.00 Amp current flowing clockwise around it. If the coil is in a uniform magnetic field of 2.00 x 10 to the -4 T directed to the left of the page , what is the magnitude of the torque in the coil ?



2187

Physics Magnetism,Magnetic Effects Of Current Level: High School

A 15 Amp current is detected along the positive X axis and perpendicular to a magnetic field . A magnetic force per unit length of 0.12 N/m acts on the conductor in the negative y direction. Calculate the magnitude and direction of the magnetic field in the region in which the current passes .



2186

Physics Magnetism,Magnetic Effects Of Current Level: High School

How many ampere-turns are there in one gilbert ?

a)

b) 1.257

c) 10^4

d) 10^8

0.7958



2185

Physics Magnetism,Magnetic Effects Of Current Level: High School

What are the mks unit and magnitude of 12.57 Oe ?

a) 1 At/m

b) 1 at

c) 10 At/m

d) 10 At

e) 100 At/m

f) 100 At

g) 1000 At/m

h) 1000 At




2184

Physics Magnetism,Magnetic Effects Of Current Level: High School

What are the mks unit and magnitude of 25 gilberts ?

a) 0.032 At/m

b) 20 At/m

c) 0.032 At

d) 20 At




2183

Physics Magnetism,Magnetic Effects Of Current Level: High School

What is the length of the coil , assuming an average diameter of the turns is equal to 3.5 inches ?

a) 1286 ft .

b) 125 ft.

c) 784 ft.

d) 916 ft.


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