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10 pts D Question 10 12.0 mV is induced in the coils of a hair dryer...
The heating coils in a hair dryer are 0.95 cm in diameter, have a combined length...
The heating coils in a hair dryer are 0.95 cm in diameter, have a combined length of 0.75 m, and a total of 400 turns Part (a) What is their total self-inductance, assuming they act like a single solenoid, in H? Part (b) How much energy is stored in them when 6.25 A flows in ? Part (c) What average emf in mV opposes shutting them off if this is done in 5.00 ms (one-fourth of a cycle for 50...
Question 24 1 pts A hair dryer advertises a power of 1600 W when used on...
Question 24 1 pts A hair dryer advertises a power of 1600 W when used on a 120 Vac line. What is the current that the hair dryer uses (in A)?
12. An emf of 96.0 mV is induced in the windings of a coil when the...
12. An emf of 96.0 mV is induced in the windings of a coil when the current in a nearby coil is increasing at the rate of 1.20 A/s. What is the mutual inductance of the two coils? A. 12mH B. 20 mH C.40 mH D. 80 mH For items 13-15 consider the RL circuit shown at left with the following values ε-12.OV, R ; 6.0 Ω and Le 30.0 mH. Switch s L is set at position a at...
Question 13 1 pts If a common-mode signal of 250 mV is applied to a balanced...
Question 13 1 pts If a common-mode signal of 250 mV is applied to a balanced circuit with a CMRR of 65 dB, how much differential-mode noise will be produced across the balanced load? 0 2.0 mV 0.81 mV 0.14 mv 0.10 microV Question 14 1 pts What is the most effective conductor shape to produce a low impedance over the widest frequency range? O round wire wire with square cross section wide flat strap Question 15 1 pts Why...
Question 10 4 pts A resistor and an inductor are connected to a source of alternating...
Question 10 4 pts A resistor and an inductor are connected to a source of alternating voltage. The inductor's self inductance is 0.180 H and the resistor's resistance is 90.0 Ohms. The voltage across the inductor is given by VL(t)(12.0 Volts) sin [ (480 rad/sec) t] Calculate the amplitude of the alternating voltage across the resistor. Hints: Use Ohm's Law twice. Once to find the amplitude of the current through the inductor. Then again to find the answer. Also, do...
1. a. One solenoid is centered inside another. The outer one has a length of 47.0...
1. a. One solenoid is centered inside another. The outer one has a length of 47.0 cm and contains 6700 coils, while the coaxial inner solenoid is 5.00 cm long and 0.170 cm in diameter and contains 17.0 coils. What is the mutual inductance of these solenoids? The current in the outer solenoid is changing at 38.0 A/s. b. Find the emf induced in the inner solenoid. c. A toroidal solenoid has a mean radius of 18.0 cm and a...
4. Two coils of wire are placed close together. Initially a current of Ip=2.5 A exists...
4. Two coils of wire are placed close together. Initially a current of Ip=2.5 A exists in one of the coils, but there is no current in the other. The current is then switched off in a time of At = 3.7 x 10-2 s. During this time the average emf induced in the other coil is Es = 1.7 V. What is the mutual inductance M of the two-coil system? system to SD C A qool odio lo lo...
hair dryer may be idealized as a circular duct through which a small fan draws ambient...
hair dryer may be idealized as a circular duct through which a
small fan draws ambient air and within which the air is heated as
it flows over a coiled electric resistance wire.
(1) If a dryer is designed to operate with an electric power
consumption of Pelec= 1500 W and to heat air from an ambient
temperature of Ti= 20°C to a discharge temperature of To= 45°C, at
what volumetric flow rate ∀˙ should the fan operate? Heat loss...
a. A coil of wire with 209 circular turns of radius 3.10 cm is in a...
a. A coil of wire with 209 circular turns of radius 3.10 cm is in a uniform magnetic field along the axis of the coil. The coil has R = 41.5 Ω . At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.149 A in the coil? b. A closely wound rectangular coil of 90.0 turns has dimensions of 30.0 cm by 47.0 cm . The plane of the coil is...
Question 1 Not yet answered Marked out of 1.00 p Flag question A 110-V hair dryer...
Question 1 Not yet answered Marked out of 1.00 p Flag question A 110-V hair dryer is rated at 1200 W. What current will it draw when operating from a 110-V electrical outlet? Select one: a. 90 mA | b. 11 A O c.5.0 A d. 1.0 A Question 2 Not yet answered Marked out of 1.00 p Flag question A light bulb is connected to a 110-V source. What is the resistance of this bulb if it is a...
The heating coils in a hair dryer are 0.95 cm in diameter, have a combined length of 0.75 m, and a total of 400 turns Part (a) What is their total self-inductance, assuming they act like a single solenoid, in H? Part (b) How much energy is stored in them when 6.25 A flows in ? Part (c) What average emf in mV opposes shutting them off if this is done in 5.00 ms (one-fourth of a cycle for 50...
Question 24 1 pts A hair dryer advertises a power of 1600 W when used on a 120 Vac line. What is the current that the hair dryer uses (in A)?
12. An emf of 96.0 mV is induced in the windings of a coil when the current in a nearby coil is increasing at the rate of 1.20 A/s. What is the mutual inductance of the two coils? A. 12mH B. 20 mH C.40 mH D. 80 mH For items 13-15 consider the RL circuit shown at left with the following values ε-12.OV, R ; 6.0 Ω and Le 30.0 mH. Switch s L is set at position a at...
Question 13 1 pts If a common-mode signal of 250 mV is applied to a balanced circuit with a CMRR of 65 dB, how much differential-mode noise will be produced across the balanced load? 0 2.0 mV 0.81 mV 0.14 mv 0.10 microV Question 14 1 pts What is the most effective conductor shape to produce a low impedance over the widest frequency range? O round wire wire with square cross section wide flat strap Question 15 1 pts Why...
Question 10 4 pts A resistor and an inductor are connected to a source of alternating voltage. The inductor's self inductance is 0.180 H and the resistor's resistance is 90.0 Ohms. The voltage across the inductor is given by VL(t)(12.0 Volts) sin [ (480 rad/sec) t] Calculate the amplitude of the alternating voltage across the resistor. Hints: Use Ohm's Law twice. Once to find the amplitude of the current through the inductor. Then again to find the answer. Also, do...
4. Two coils of wire are placed close together. Initially a current of Ip=2.5 A exists in one of the coils, but there is no current in the other. The current is then switched off in a time of At = 3.7 x 10-2 s. During this time the average emf induced in the other coil is Es = 1.7 V. What is the mutual inductance M of the two-coil system? system to SD C A qool odio lo lo...
hair dryer may be idealized as a circular duct through which a
small fan draws ambient air and within which the air is heated as
it flows over a coiled electric resistance wire.
(1) If a dryer is designed to operate with an electric power
consumption of Pelec= 1500 W and to heat air from an ambient
temperature of Ti= 20°C to a discharge temperature of To= 45°C, at
what volumetric flow rate ∀˙ should the fan operate? Heat loss...
Question 1 Not yet answered Marked out of 1.00 p Flag question A 110-V hair dryer is rated at 1200 W. What current will it draw when operating from a 110-V electrical outlet? Select one: a. 90 mA | b. 11 A O c.5.0 A d. 1.0 A Question 2 Not yet answered Marked out of 1.00 p Flag question A light bulb is connected to a 110-V source. What is the resistance of this bulb if it is a...
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