voltage, equivalent capacitance, and stored energy problem

A. Calculate the equivalent capacitance of the following group of capacitors. B. Calculate the voltage across each capacitor, the charge separated in each, and the stored energy in each. see attached

Net potential problems

The following questions refer to the attached diagram. Charge q1, q2, and q3 are fixed in place. Points A and B lie on the line y=x. Point A is midway between charges q1 and q3. Point B is twice the distance from the origin as point A. Note: charges q1, q2, q3 and point B lie on the corners of a square, with point A at the cente ...continues

Calculate net electric potentials due to 3 charges, ball w charge placed in field

Calculate net electric potentials due to 3 charges, ball w charge placed in field. see jpg for question.

524- Electricity Magnetisma and Waves

CMP is installing a new transformer to supply power to my woodworking shop. Its primary side has 200 turns (110 volts), and its secondary side had 500 turns. It supplies power to the following circuit: (refer to attachment). CMP charges me $0.015 per kWhr. My scroll saw (item R3) runs for 45 hours per month. What is my month ...continues

4 problems involving resistance, tungsten filaments, current, emf

resistance, tungsten filaments, current, emf. see jpg for questions

Power, voltage and capacitor problem

1) A tungsten filament has a resistance of 3 OMP at 20 degrees. When connected to a 100V power supply a current of 6.0A passes through a filament. If the filament is connected to the same power supply when it is at 2000 degrees, what will be the current through the filament and its power loss? 2) A battery whose emf i ...continues

Working with the variation of resistance in regards to temperature.

(a) A 5 m length of copper wire at 20°C has a radius of 0.25mm. If a potential difference of 10V is applied across the length of the wire, determine the current in the wire. (b) If the wire is heated to 50.0°C and the 10 V potential difference is maintained, what is the resulting current in the wire?

Capacitor question

In the following circuit, what is the current through R1 at T=1 second after the switch is closed? How long does it take the capacitor to be 95% fully charged? See attached

Resistance problems

1. Find the current in each resistor in attachment #1 which is #27 on the page and it is circled. I need to see how you get your answer though. 2.Find a). the equivalent resistance of the circuit in the second Attachment or #47 on page and it is circle as well, b).each current in the circuit, c). the potential difference acr ...continues

Magnetism problems

1.at a certain location, Earth has a magnetic field of 0.6*10^4T pointing 75degrees below the horixontal in a north-south plane. A 10m long straight wire carries a 15Acurrent. A)if the current is directed horizontally toward the east, what are the magnitude and direction of the magnetic force on the wire? B)What are the magnit ...continues