Physics

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Three 10-ohm resistors take the shape of a triangle, one resistor in each leg. An ohm-meter across ... Started by ahriuashd	1 Replies 54 Views	Jul 29, 2018 by cat123
Three resistors take the shape of a triangle, one resistor in each leg. Resistance in one leg is 4 ... Started by mp14	1 Replies 64 Views	Jul 29, 2018 by choc0chan
A 4-ohm and 6-ohm resistor connected in parallel have an equivalent resistance of A) 2.4 ohms. ... Started by AEWBW	3 Replies 116 Views	Jul 29, 2018 by efwsefaw
A compact fluorescent lamp gives more light output for A) less power. B) the same power. C) ... Started by newbem	1 Replies 60 Views	Jul 29, 2018 by CharlieArnold
Which draws more current, a 60-W or a 100-W incandescent lamp, both rated for 120-V operation? A) ... Started by ss2343	1 Replies 41 Views	Jul 29, 2018 by Viet Thy
Which has the larger resistance, a 60-W or a 100-W incandescent lamp, both rated for 120-V ... Started by mspears3	1 Replies 37 Views	Jul 29, 2018 by brittanywood
Which of these lamps is the longer lasting in a common circuit? A) incandescent lamp B) compact ... Started by sdfghj	3 Replies 262 Views	Jul 29, 2018 by fur
A power line with a resistance of 2 ohms draws a current of 80 A. The power dissipated in the line ... Started by Sportsfan2111	1 Replies 110 Views	Jul 29, 2018 by lindahyatt42
An electric heater is rated at 300 W when used in a 110-V circuit. The safety fuse in the circuit ... Started by abc	1 Replies 104 Views	Jul 29, 2018 by moormoney
A lamp rated 23W-120V means that it will deliver 23 W A) when the voltage across it is 120 V. B) ... Started by pane00	1 Replies 57 Views	Jul 29, 2018 by momo1250
The amount of current in an LED bulb rated 10.5W-120V is A) less than 1 A. B) about 1 A. C) ... Started by theo	3 Replies 112 Views	Jul 29, 2018 by joneynes
To keep chickens warm in a shed on a cold night, it is best to use A) an incandescent lamp. B) a ... Started by SGallaher96	1 Replies 123 Views	Jul 29, 2018 by SVictor
State and explain Faraday's law of induction. What will be an ideal ... Started by CORALGRILL2014	1 Replies 74 Views	Jul 29, 2018 by rleezy04
What is the cause of a magnetic field about a permanent magnet and about a current-carrying wire? ... Started by Kthamas	1 Replies 71 Views	Jul 29, 2018 by meganmoser117
A howler monkey is the loudest land animal and, under some circumstances, can be heard up to a ... Started by haleyc112	3 Replies 108 Views	Jul 29, 2018 by shaquita
Unlike electric charges, magnetic poles cannot be A) located. B) isolated. C) ... Started by eruditmonkey@yahoo.com	1 Replies 65 Views	Jul 29, 2018 by smrerig
The rule for the interaction of magnetic poles is similar to the rule for electric A) circuits. ... Started by ssal	1 Replies 72 Views	Jul 29, 2018 by maaaaaaaaaa
Since magnetic force on a moving electron is always perpendicular to its direction of motion, ... Started by oliviahorn72	1 Replies 55 Views	Jul 29, 2018 by morrie123456
A sound source emits 20.0 W of acoustical power spread equally in all directions. The threshold of ... Started by jwb375	3 Replies 131 Views	Jul 29, 2018 by Meganchabluk
The sound level at 1.0 m from a certain talking person talking is 60 dB. You are surrounded by five ... Started by ENagel	1 Replies 165 Views	Jul 29, 2018 by macmac
Changing the magnetic field intensity in a copper coil induces A) current. B) voltage. C) both ... Started by RODY.ELKHALIL	1 Replies 204 Views	Jul 29, 2018 by ebonylittles
A strong magnetic field easily penetrates A) human flesh. B) plastic coatings. C) both of these ... Started by NguyenJ	1 Replies 59 Views	Jul 29, 2018 by abro1885
The ultimate source of all magnetism is A) tiny bits of iron. B) tiny domains of aligned atoms. ... Started by ENagel	3 Replies 188 Views	Jul 29, 2018 by Dnite
A compass needle in a magnetic field experiences A) a torque. B) a net force. C) both of these ... Started by bb	1 Replies 77 Views	Jul 29, 2018 by kiamars2010
A magnet will become weaker if it is A) dropped on a hard surface. B) held in a hot flame. C) ... Started by iveyjurea	1 Replies 38 Views	Jul 29, 2018 by ky860224