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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.
Find the current in each resistor. And determine the potential difference between points A and B.
What is the voltage across the capacitor when the current in the circuit is 0.10 A and decreasing?
Given 10Vmax ac source, LRC series circuit, Imax at resonance frequency Imax=2A; f= 200Hz; Imax = 1.2A; f=350Hz Imax = 1.5A
Given these parameters what is the resonant frequency and how did you get this value?