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Calculate the resistance of a piece of 20-gauge copper wire 2.00 m long. The cross-sectional area of 20-gauge wire is 0.5176 mm^2.
A piece of copper wire is formed into a single circular loop of radius 17 cm. A magnetic field is oriented parallel to the normal to the loop.
It is generally dangerous to tuck electrical extension cords away behind furniture, under carpets, or anywhere else that they might cause a fire.
For each topic describe in a brief paragraph its key characteristics.Electrical ResistanceOhm's Law
Each of the resistors below has a resistance of 2.4 omega and can dissipate a maximum of 36W without becoming excessively heated.
Find the electric potential in all four regions as a function of radius (V_IV(r), etc.) Take V=0 at infinite radius.
A thundercloud has the charge distribution as shown on the diagram. Treat this distribution as two point charges, a negative charge.
When a charge of 180 microC is applied to the plates of a capacitor, the potential difference between the plates is 15 V. What is the capacitance?
Calculate the force of repulsion. Show that this force is equal to about 0.5% of the force of attraction between the sun and earth.
Divers are sealed in deep-dive research vessel on the deck of the mother ship and lowered to a depth of 4000 m into the ocean.
How does the proposed 4.5 GW installed wind power (25% of 20% of 90GW) contribute to the need for pump storage?
A 20- O resistor and a 30- O resistor are wired in parallel and connected to a 9.0-V battery. How much current is drawn from the battery?
Show that the field inside a spherical cavity cut in a uniform dielectric medium is uniform and of magnitude.
In a typical household electrical circuit are the appliances connected in series or in parallel? Why? Explain.
An office worker wants to plug in a 3000 watt 110 Volt heater into a standard 15 amp, 110 V electrical outlet. Would this be safe?
The series combination of the two bulbs will draw more current from the house circuit than the parallel combination.
Kilowatt-hours needed to run an electric car (95% efficiency motor) equivalent to 5 gallons of gasoline.
A certain transformer triples input voltage. If the current in the primary coil is 9.0 A, then the secondary coil current is
Explain what a waveguide is, the cut-off frequency and give examples in everyday use.
How do you calculate Imax, max power, avg power, rms current, rms voltage, and frequency.
A coil is connected to a 60 Hz, 100-v ac generator. At this frequency, the coil has an impedance of 10 omega and a reactance of 8 omega.
An AC power generating station provides single phase power to a consumer 100 the generator end of the voltage at miles away, over a transmission line.
How do you design a circuit to use caps or inductors in a dc circuit? An ac circuit?What is the point of having a cap to ground in a dc circuit?
The total current delivered to a number of devices connected in parallel is the sum of the individual currents in each device.
An AC generator consists of eight turns of wire, each of area .0756 m^2, and a total resistance of 8.38 Ohms.