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1. A long, straight conductor carries a current of 200 A. At what distance from the conductor is the magnetic field
caused by the current equal to the Earth’s magnetic field?
2. A power cable contains two long parallel conductors placed 1.5 cm apart. It carries a current of 125 A to a 40 hp
electric motor. Find the force exerted on a 2.0 m length of one conductor?
3. A coil used to produce a magnetic field for an electron beam experiment has a radius of 15 cm and has 300
turns. What current is needed to produce a magnetic field of 5.0 x 10-3 T?
A circular coil of wire 0.0275 m in radius, having 25 turns, lies in a horizontal plane. It carries a current of 3.00 A in a
counterclockwise rotation when viewed from above. The coil is in the magnetic field directed towards the right with a
magnitude of 1.20 T. Find the magnetic moment and the torque on the coil.
1. A beam of protons, each with charge 𝑞 ≅ 1.60 × 10−19𝐶, is moving at 4.50 × 105𝑚/𝑠 through a uniform magnetic
field with magnitude 0.60 T. The direction of motion of the protons is to the right, and the magnetic field direction is downward-right, at an angle of 𝜃 = 𝜋 6 𝑟𝑎𝑑𝑖𝑎𝑛𝑠 from the proton direction. Find the magnetic force acting on each
proton.
2. A straight copper wire carries a 6.0 A current from left to right in a region between the poles of large
electromagnet where a horizontal magnetic field directed at northeast with a magnitude of 2.10 T at 30 degrees
northeast. What is the magnetic force on a 2m section of a wire?
Thank you for your information about that question, but may I ask how you got the numbers 22.22 and 6.67? thank you!!!
Consider a thermodynamic system consisting of 3 mol of an ideal gas occupying 0.03m volume at 300k temperature determine its initial pressure for this gas delta=1.4 it undergoes the following process
You are testing a new amusement park roller coaster with an empty car with a mass of 110 kg
kg . One part of the track is a vertical loop with a radius of 12.0 m
m . At the bottom of the loop (point A
A) the car has a speed of 25.0 m/s
m/s and at the top of the loop (point B
B) it has speed of 8.00 m/s
m/s .
A force of 3i+2j+4k N gives displacement of 10j m.the work done is?
A. 20J
B. 26J
C. 32J
D. Zero
1.A positive charge of 10 -8 C experiences a force of 0.25 N when located at a certain point in an electric field. Find the intensity of the electric field at that point.
C1 =3.0 uF and a C2 = 5.0 uF capacitors are connected in series with a 12-V battery. Find the equivalent capacitance
Two protons in a molecule are separated by a distance of 3.6 x 10-10 m. Find the electrostatic force exerted by one proton on the other.
