Physics

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An initially uncharged 10-F capacitor is charged by a 10-V battery through a resistance R. The ... Started by james9437	1 Replies 74 Views	Aug 6, 2020 by Harbringer
What maximum power can be generated from an 18-V emf using any combination of a 6.0- resistor and a ... Started by joesmith1212	1 Replies 75 Views	Aug 6, 2020 by kmb352
To increase the current density in a wire of length and diameter D, you can Started by strangeaffliction	1 Replies 57 Views	Aug 6, 2020 by chem1s3
The temperature coefficient of resistivity of iron is 5.0 103 / C; that of carbon is 0.50 103 / C. ... Started by wrbasek0	1 Replies 142 Views	Aug 6, 2020 by BUTTHOL369
The electron density in copper is 8.49 1028 electrons/m3. The electron charge is e = 1.60 1019 C. ... Started by cool	1 Replies 176 Views	Aug 6, 2020 by gcook
Light bulb A is rated at 60 W and light bulb B is rated at 100 W. Both are designed to operate at ... Started by nautica902	1 Replies 192 Views	Aug 6, 2020 by coyin
Jadeen says that you can increase the resistance of a copper wire by hammering the wire to make it ... Started by Cooldude101	1 Replies 116 Views	Aug 6, 2020 by daiying98
In the Drude model of electrical conduction, the current density is NOT directly proportional to Started by gonzo233	1 Replies 492 Views	Aug 6, 2020 by kiamars2010
In the Drude model of electrical conduction, the current density is directly proportional to Started by geoffrey	1 Replies 519 Views	Aug 6, 2020 by upturnedfurball
If 5.0 1021 electrons pass through a 20- resistor in 10 min, what is the potential difference ... Started by lidoalex	1 Replies 166 Views	Aug 6, 2020 by mistyjohnson
How many electrons pass through a 20- resistor in 10 min if there is a potential drop of 30 volts across it? Started by formula1	1 Replies 172 Views	Aug 6, 2020 by lorealeza
An electric device, which heats water by immersing a resistance wire in the water, generates 50 cal ... Started by jhjkgdfhk	1 Replies 102 Views	Aug 6, 2020 by potomatos
A small bulb is rated at 7.50 W when operated at 125 V. The tungsten filament has a temperature ... Started by B	1 Replies 94 Views	Aug 6, 2020 by shaikhs
A rod of 2.0-m length and a square (2.0 mm 2.0 mm) cross section is made of a material with a ... Started by pragya sharda	1 Replies 202 Views	Aug 6, 2020 by trog
A nichrome wire and an aluminum wire, each with the same initial resistance, have the same change in ... Started by crobinson2013	1 Replies 89 Views	Aug 6, 2020 by Yixagurpuldink
A high-resistance material is used as an insulator between the conductors of a length of coaxial ... Started by j.rubin	1 Replies 98 Views	Aug 6, 2020 by AngeliqueG
A conductor of radius r, length and resistivity has resistance R. What is the new resistance if it ... Started by c0205847	1 Replies 99 Views	Aug 6, 2020 by EAN94
A 4.0- resistor has a current of 3.0 A in it for 5.0 min. How many electrons pass through the ... Started by Starlight	1 Replies 111 Views	Aug 6, 2020 by Liamb2179
The heating coil of a hot water heater has a resistance of 20 ohms and operates at 210 V. If ... Started by frankwu	1 Replies 69 Views	Aug 6, 2020 by Jayson
A high-voltage transmission line carries 1 000 A at 700 kV for a distance of 100 miles. If the ... Started by BrownTown3	1 Replies 68 Views	Aug 6, 2020 by 14vl19
Which of the following statements is incorrect? Started by pepyto	1 Replies 74 Views	Aug 6, 2020 by joewallace
What is the total energy stored by C3 when C1 = 50 F, C2 = 30 F, C3 = 36 F, C4 = 12 F, and V0 = 30 V? Started by silviawilliams41	1 Replies 48 Views	Aug 6, 2020 by honnalora
What is the equivalent capacitance of the combination shown? Started by jrubin	1 Replies 66 Views	Aug 6, 2020 by InfiniteSteez
Two spheres are made of conducting material. Sphere #2 has twice the radius of Sphere #1. What is ... Started by codyclark	1 Replies 113 Views	Aug 6, 2020 by shoemake
The equivalent capacitance of the circuit shown below is Started by sammy	1 Replies 132 Views	Aug 6, 2020 by ttt030911