A potential difference of 3.60 V will be applied to a 33.00 m length of 18-gauge platinum wire (diameter = 0.0400inches). Calculate the current.

Calculate the current density.

Calculate the electric field.

Calculate the rate at which thermal energy will appear in the wire.

An AC generator supplies an rms voltage of 240 V at 50.0 Hz. It is connected in series with a 0.350 H inductor, a 3.60 μF capacitor and a 211 Ω resistor.

1. What is the impedance of the circuit?

2. What is the rms current through the resistor?

3. What is the average power dissipated in the circuit?

4. What is the peak current through the resistor?

5. What is the peak voltage across the inductor?

6. What is the peak voltage across the capacitor?

7. The generator frequency is now changed so that the circuit is in resonance. What is that new (resonance) frequency?

A certain super capacitor has a capacitance of 1.0F. The maximum voltage is 2.7 V. It is contained in a 8.00mm diameter can that is 13.00 mm long. It has two leads that are 3.50mm apart. It costs $0.29 when bought in bulk. How can such a large capacitance be made in a small container? The largest dielectric constant for oils is about 90. The largest dielectric constant is about 100,000 in material that costs $100,000/kg. Just describe the type of design (vacuum parallel-plate, dielectric parallel-plate, cylindrical, dielectric cylindrical, rolled parallel-plate, electrolytic, adjustable plate, etc.)

What is the energy density of the capacitor when fully charged?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 9.2 A, while that of the vacuum cleaner is 5.9 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner. (c) Determine the ratio of the energy used by the blow-dryer in 18 minutes to the energy used by the vacuum cleaner in 56 minutes.

Three loads are connected in parallel to an AC supply of 120∠0° V. The loads are 40∠30° Ω, 50 - j30 Ω
and 30 + j40 Ω.
a) Draw the circuit diagram
b) Determine the amplitude and phase angle of the supply current graphically by constructing a
phasor diagram using a suitable scale of the load currents and source voltage.
c) State the overall power factor using the answer from part (b).
d) Construct another phasor diagram for the system that illustrates an improved power factor to
unity.
e) Determine the VAR rating of the load required to achieve this using its current phasor determined
graphically from part (d). State its capacitance or inductance.
f) Draw the power triangles for the system before and after power factor correction.

5. A proton and an electron are in a uniform electric field with magnitude 45 V/C. Which particle has the larger magnitude acceleration, and what is the magnitude of the acceleration? (e = 1.6×10−19 C, mp = 1.67×10−27 kg, me = 9.11×10−31 kg) A. the electron, 7.9×1012 m/s2 B. the proton, 4.3×1013 m/s2 C. the proton, 4.3×109 m/s2 D. the electron, 7.9×108 m/s2 E. the electron, 7.9×1010 m/s2

6. A +2q point charge is located at the origin (x = 0), and a –3q charge is at x = +d. What is the magnitude of the electric field at x = +2d ? Assume 1 4π0 = k. A. 7kq 2d2 B. 5kq 2d2 C. 4kq d2 D. 3kq 2d2 E. 5kq d2

An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.550 H inductor, a 3.90 μF capacitor and a 311 Ω resistor. What is the impedance of the circuit?

What is the rms current through the resistor?

What is the average power dissipated in the circuit?

What is the peak current through the resistor?

What is the peak voltage across the inductor?

What is the peak voltage across the capacitor?

The generator frequency is now changed so that the circuit is in resonance. What is that new (resonance) frequency?

Describe the status of the N, Z, C, and V flags of the CPSR after each of the following:
(a) ldr r1, =0xffffffff
ldr r2, =0x00000001
add r0, r1, r2
(b) ldr r1, =0xffffffff
ldr r2, =0x00000001
cmn r1, r2
(c) ldr r1, =0xffffffff
ldr r2, =0x00000001
adds r0, r1, r2
(d) ldr r1, =0xffffffff
ldr r2, =0x00000001
addeq r0, r1, r2
(e) ldr r1, =0x7fffffff
ldr r2, =0x7fffffff
adds r0, r1, r2

Issue # 2 - A V-belt from a 10 in. Diameter spindle pulley that rotates at 1800 rpm, to a 36 in. Diameter flat pulley. The wheelbase is 40 "and the throat angle is 40o. The friction coefficient between the belt and the grooved pulley is 0.2 and with the flat pulley it is also 0.2. The cross section of the straps is a trapezoid with parallel sides of 1.5 "and 0.75", with a height between them of 1 ". The weight of this belt is 0.04 lbf / in3, and the maximum allowable tension on each belt is 200 lbf. Determine: a) How many straps are needed. b) The Torque applied in the transmission, c) The Transmitted power. Note: Consider locating the center of gravity of the belt cross section in order to correct the actual pulley diameter as the band on the splined pulley is slightly outward.)