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Electricity and Magnetism
You have taken physics and you know that household circuits usually have circuit
breakers limiting current to 20 A or less. You also know that pacemakers can be
influenced by external electric or magnetic fields. If a pacemaker is safe for magnetic
fields of 1 mT and below, how close can someone wearing a pacemaker get to a wire
inside of a home?
breakers limiting current to 20 A or less. You also know that pacemakers can be
influenced by external electric or magnetic fields. If a pacemaker is safe for magnetic
fields of 1 mT and below, how close can someone wearing a pacemaker get to a wire
inside of a home?
Electricity and Magnetism
There’s a flammable gas in the lab and nobody is sure whether it is methane (CH4),
ethane (C2H6), or propane (C3H8). Fortunately, you have a mass spectrometer (imagine
the luck!). The mass spectrometer uses an electric field of 1000 V/m and a magnetic
field of 0.500 T in the velocity selector, and this same magnetic field in the
deflection chamber. If the distance between the entry into the deflection chamber and
the location where the ion strikes the measurement plate (indicated in the diagram) is
2.49 mm, what is the mass for the material assuming that it is singly ionized? If 1 amu
= 1.66 × 10−27 kg, is the material methane (16 amu), ethane (30 amu), or propane (44
amu)?
ethane (C2H6), or propane (C3H8). Fortunately, you have a mass spectrometer (imagine
the luck!). The mass spectrometer uses an electric field of 1000 V/m and a magnetic
field of 0.500 T in the velocity selector, and this same magnetic field in the
deflection chamber. If the distance between the entry into the deflection chamber and
the location where the ion strikes the measurement plate (indicated in the diagram) is
2.49 mm, what is the mass for the material assuming that it is singly ionized? If 1 amu
= 1.66 × 10−27 kg, is the material methane (16 amu), ethane (30 amu), or propane (44
amu)?
Electricity and Magnetism
A fairly typical magnetic field strength for they Milky Way Galaxy is 5.0 × 10−10 T.
If a cosmic ray electron is moving with a speed of 3.0 × 106 m/s, what is the radius of
its spiral path (i.e., the cyclotron radius)? How long does it take such an electron to
make one full circle?
If a cosmic ray electron is moving with a speed of 3.0 × 106 m/s, what is the radius of
its spiral path (i.e., the cyclotron radius)? How long does it take such an electron to
make one full circle?
Electricity and Magnetism
You had so much fun making a capacitor that you decide to make an electric motor.
You have copper wire (resistivity, ρ = 1.70 × 10−8 Ω m) with a cross-sectional area of
2.00 × 10−7 m2
, and using 1.00 m of this wire you make a rectangular coil with sides
having lengths of 1.50 cm and 1.00 cm. Your ceramic magnet has a magnetic field of
0.30 T in which you will immerse this coil. You will power it with a standard D-cell
battery, so the potential difference is 1.50 V. Determine the maximum torque on your
electric motor. (There are a lot of little steps in this problem, including geometry and
equations from prior chapters.)
You have copper wire (resistivity, ρ = 1.70 × 10−8 Ω m) with a cross-sectional area of
2.00 × 10−7 m2
, and using 1.00 m of this wire you make a rectangular coil with sides
having lengths of 1.50 cm and 1.00 cm. Your ceramic magnet has a magnetic field of
0.30 T in which you will immerse this coil. You will power it with a standard D-cell
battery, so the potential difference is 1.50 V. Determine the maximum torque on your
electric motor. (There are a lot of little steps in this problem, including geometry and
equations from prior chapters.)
Electricity and Magnetism
A circular region of radius R = 0.003 m has a uniform displacement current that flow perpendicular to the the plane with I = 0.005 A. What is the magnitude of the magnetic field due to the displacement current at a radial distance of 0.002 m and 0.005 m.
Electricity and Magnetism
A chain hang over a nail with 2 m over one side & 6 m on another side. If the force of friction is equal to the wt. of 1.0 m of the chain, calculate the chain required for the chain to slide of the nail.]
Electricity and Magnetism
does cathode have changed deflection for south and north pole? or it deflects only by magnet,, pole doesnt matter?
Electricity and Magnetism
A proton, a neutron and electron all travelling at the same velocity enter a magnetic field. State which particles is deflected the most and explain your answer ?
Electricity and Magnetism
I am working on the measurements of magnetic susceptibility of various materials using electromagnetic induction phenomenon. I have made a solenoid with primary and secondary windings coils. How do I check it whether it works or not? Hint: I guess through oscilloscope or multimeter etc.
Electricity and Magnetism
A thin rod extends along the z-axis from z = -d to z = d. The rod carries a charge uniformly distributed along its length with linear charge density lamda. By integrating over this charge distribution, calculate the potential at a point P1 on the z-axis with coordinates (0,0,2d).
