An electron is moving with a velocity of in a uniform magnetic field of strength . The velocity vector makes a 55o angle with the magnetic field. What is the magnitude of the magnetic force on the electron?

Two parallel long, straight wires are 0.0040 m apart and carry currents of 5.0 A and 10 A, respectively. Determine the net magnetic field midway between the wires. Take B as positive if it is going into the page.

Two charges, and , are separated by a certain distance. The ratio of charge to charge is 1:2. What is the ratio of the magnitude of the force on to the magnitude of the force on ?

An electron traveling at a velocity enters a uniform magnetic field . Initially, the velocity and field are perpendicular to each other. If the electron goes a distance , the amount of work done on it by the magnetic field is ________.

A proton () is accelerated from rest through a potential difference of 750 volts. What is its final velocity?

A faraday is defined as charge equal to  protons. (Avogadro’s Number ) Find the number of coulombs in 1 faraday. (use )

What will be the final charge on the capacitor after the switch is closed and equilibrium has been reached? The source source is shown on the left vertical branch with a switch at the top of the circuit. From the top node, a horizontal wire leads right from the switch to a 15 ohm resistor. To the right of this resistor, a 16 microfarad capacitor is connected vertically. Below the resistor, a 38 ohm resistor connects downward to the bottom return wire. The capacitor and the 38 ohm resistor share a connection point.

A constant 10 A current flows in a circuit with a resistance of 200 Ω. The net charge passing through any point in the circuit during a 1 minute interval is _______.

Two capacitors having values of 10 μF each are connected in parallel and then hooked up to a 9.0 V battery. How much energy must the battery supply to charge the capacitors?

A cube with an edge of length is placed in a uniform magnetic field throughout the region that has components , , and . Find the flux through the shaded surface.