Q: A toroidal solenoid has mean radius 12.0 cm and crosssectional
A toroidal solenoid has mean radius 12.0 cm and crosssectional area 0.600 cm2. (a). How many turns does the solenoid have if its inductance is 0.100 mH? (b). What is the resistance of the solenoid i...
See AnswerQ: A 2.50-mH toroidal solenoid has an average radius
A 2.50-mH toroidal solenoid has an average radius of 6.00 cm and a cross-sectional area of 2.00 cm2. (a). How many coils does it have? (Make the same assumption as in Example 30.3.) (b). At what rate...
See AnswerQ: A straight, 2.5-m wire carries a typical
A straight, 2.5-m wire carries a typical household current of 1.5 A (in one direction) at a location where the earth’s magnetic field is 0.55 gauss from south to north. Find the magnitude and directio...
See AnswerQ: It has been proposed to use large inductors as energy storage devices
It has been proposed to use large inductors as energy storage devices. (a). How much electrical energy is converted to light and thermal energy by a 150-W light bulb in one day? (b). If the amount o...
See AnswerQ: It is proposed to store 1.00 kW # h =
It is proposed to store 1.00 kW # h = 3.60 × 106 J of electrical energy in a uniform magnetic field with magnitude 0.600 T. (a). What volume (in vacuum) must the magnetic field occupy to store this a...
See AnswerQ: An inductor used in a dc power supply has an inductance of
An inductor used in a dc power supply has an inductance of 12.0 H and a resistance of 180 Ω. It carries a current of 0.500 A. (a). What is the energy stored in the magnetic field? (b). At what rate...
See AnswerQ: A solenoid 25.0 cm long and with a cross-
A solenoid 25.0 cm long and with a cross-sectional area of 0.500 cm2 contains 400 turns of wire and carries a current of 80.0 A. Calculate: (a). the magnetic field in the solenoid; (b). the energy d...
See AnswerQ: How might a loop of wire carrying a current be used as
How might a loop of wire carrying a current be used as a compass? Could such a compass distinguish between north and south? Why or why not?
See AnswerQ: In Fig. 30.11, switch S1 is closed while
In Fig. 30.11, switch S1 is closed while switch S2 is kept open. The inductance is L = 0.115 H, and the resistance is R = 120 Ω. Fig. 30.11: (a). When the current has reached i...
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