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An electron is placed at a point (0, +5X10^-10m) in the electric field produced in I. Find the force on the electron.
Imagine that you would like to design a parallel plate capacitor that could store 1 J of electrical energy in the electric field between its plates.
A Solenoid has 704 turns, a length of 33.3 cm, a radius of 3.85 cm. If it carries 5.61 A, calculate the magnetic field at an axial point located 20.2 cm.
When the magnetic field through a loop changes, currents run in the loop in such a way as to make a new magnetic field in the opposite direction.
Find the magnitude and direction of the electric field at the point (a/2,a/2), mid-way between the +q and -q charges.
Four identical point charges (q = + 10.0 micro coulomb) are located on the corners of a rectangle. The dimensions of the rectangle are L = 60.0 cm.
What is the change in the potential energy of the charge-field system?Through what potential difference does the charge move?
A long, straight wire carries a current of 48 A. The magnetic field produced by this current at a certain point is 7.0E-5 T. How far is the point from the wire?
A piece of copper wire has a resistance per unit length of 6.45E-3 omega/m. The wire is wound into a thin, flat coil of many turns that has a radius.
A wire 2.80 m in length carries a current of 5.00 A in a region where a uniform magnetic field has a magnitude of 0.390 T.
A 40 W electric lamp draws a current of 0.33 A when operated with a potential difference of 120 V. What is the resistance of the lamp?
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0 10-23 kg m/s
Experimentor A uses a test charge qsub0 and experimentor B uses a test charge 2qsub0 to measure an electric field produced by stationary charges.
Charge is distributed uniformally along a straight wire. the electric field 2 cm from the wire is 20N/C. The electric field 4cm from the wire.
A 5cm radius conducting sphere has a charge density of 2*10^-6C/m^2 on its surface. Its electric potetial relative to the potential far away is.
If the electric charge on the object is doubled while its mass remains the same, find the direction and magnitude of its acceleration.
Determine the field from the rod at a point P a distance y from its center perpendicular to the rod.
How does the speed of the particles as they enter the field compare to their speed as they exit the field.
How far must the point charges q1 = +7.22 µC and q2 = -22.9 µC be separated in cm for the electric potential energy of the system to be -159 J?
A solenoid that is 75 cm long produces a magnetic field of 2.1 T within its core when it carries a current of 6.8 A. How many turns of wire.
Suppose that a current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end of the wire to the other.
1) How would you arrange two flat circular coils so that their mutual inductance was a) greatest b) least (without separating them by a great distance)?
The cube is 40 cm on each edge. Four straight segments of wire - ab, bc, cd, and da - form a closed loop that carries a current I = 5 A.
Suppose a plane electromagnetic wave has a wavelength of 50 m and the electric field vibrates with an amplitude of 22 V/m.
You may not use any results for the magnetic field due to any current configuration. Be sure to explain each step in your reasoning carefully.