PHYSICS HIGH SCHOOL

What is not needed for a charge to flow through a conducting wire?A. an electrical insulator

B. a wire connected in a complete loop

C. a source of electrical energy

Answers

Answer 1
Answer:

Answer: The correct answer is an electrical insulator.

Explanation:

Insulator : It is a material which resists the flow of electrons. It has high resistance in comparison to the conductor.

Conductor: It is a material which allows the flow of electrons. It has low resistance in comparison to the conductor.

Battery is a source of electrical energy. It forces the electrons to flow. The rate of flow of electrons constitutes the current.

In the given problem, an electrical insulator is not needed for a charge to flow through a conducting wire.

To design the circuit and to make a current flow in the circuit, a battery, a wire connected in a complete loop and a source of electrical energy are needed.

Therefore, the correct option is (C).
Answer 2
Answer: An electrical insulator would not be needed for a charge to flow through a conducting wire.

Answer: Letter A 

Hope that helps! -UF aka Nadia

Related Questions

A pickup truck is carrying a toolbox, but the rear gate of the truck is missing. The toolbox will slide out if it is set moving. The coefficient of static and kinetic friction between the box and the level bed of the truck are 0.300 and 0.200, respectively. What is the greatest acceleration that the truck can have before the toolbox slides out?
Each day, Ted can wax 8 cars or wash 10 cars, and Tom can wax 3 cars or wash 5 cars. What is each man's opportunity cost of washing a car?
An object falls freely from height H. if it takes one second to travel last half of total displacement find height H priop to the fall.​
How much energy is used when 100w light bulb is on for 1 minute?
How dose an atom become an ion with a -2 charge?

What has to be different to allow refraction to occur?a. the medium
b. the light
c. the wave
d. the speed

Answers

a. the medium

For refraction to occur, there has to be change from one medium to another. For example rays of light would refract as the travel from air to water.

Streams of electrically charged particles flowing at high speeds from the sun make up the

Answers

That's the so-called 'solar wind'.

What is the mass of an object weighing 63 N on Earth?

Answers

Weight expressed in Newtons is expressed in the equation whereby Weight= the mass of an object * the force of gravity. The force of gravity on earth is a constant 9.8 meters per second squared. Therefore if weight (w) = 63 N and the force of gravity is 63 N then the mass must equal 6.43 kg. Because the equation for weight is w=mg so 63 N (w) = m * 9.8 m/s^2. 

Calculate the maximum kinetic energy of photoelectrons emitted from this plate when light of wavelength (λ) 520nm is directed at the metal surface.Work function (Ф) of the plate = 1.1 × 10⁻¹⁹ J
Planck's constant (h) = 6.63 × 10⁻³⁴ Js
Frequency (f) = c ÷ λ
c = speed light in vacuum = 3.00 × 10⁸ms⁻¹
Ekmax = hf - Φ

Wavelength must be in metres, so it'll be 590×10⁻⁹

I've worked this out and gotten two different answers so I thought I'd check to see which one is right.

Answers

Well for a start, 520nm is 520 nanometres and for some reason you've called it 590 x10^-9 (590 isn't standard form) where it's actually 5.2 ×10^-7 metres.
Put that into the equations:
f = c/λ = 3.0 x10^8/5.2 ×10^-7 = 5.77 x10^14 (3 s.f.)
(5.77 x10^14) x (6.63 x10^-34) - (1.1 x10^-19) =
2.73 x10^-19 J

20. What is the density of a fluid with a massof 10 kg that takes up a space of 60 mL?

Answers

Density = mass / volume. For that particular fluid, Density = (10,000 gm)/(60 ml) = (166 and 2/3) gm per ml. (That's roughly 8 times the density of the most dense substance on Earth.)

Fluid pressure ____________ as depth ____________.a. decreases, increases
c. increases, increases
b. decreases, decreases
d. both b and c are correct

Answers

c. The deeper you go below the fluid's surface the more matter is pressing downward on that point, so the greater the pressure.
Other Questions
A _____ is used to warm air for heating. boiler furnace solar collector thermostat
The galactic center of the milky way is located in the direction of the constellation?A. Cassiopeia B. Aquarius C. centaurus D. Sagittatius How do stars locate in the galactic disk orbit the galactic center? A. they do not orbit the galactic center. B. they move in the circular orbits around the galactic center. C. they bob up and down as they orbit the galactic center. D. they orbit in elliptical orbits with random orientations.
When a star collapses to form a black hole, its mass _____.a. decreasesb. remains the samec. increases
A mixed dentition usually consists of