All categories

2 years ago

Is the direction of current through a battery always from the negative terminal to the positive one?

Physics

2 answers:

rodikova [14]2 years ago

8 0

Answer:

Yes. The current is actually flow of charge and in actual situation electrons flow from negative terminal to positive terminal. But in physics the convention of positive charge flow is used i.e. we take the direction of current from positive to negative terminal.

Explanation:

diamong [38]2 years ago

3 0

Poorly written question.

The direction of current through a CIRCUIT is always from the negative terminal of the battery to the positive one.

But the battery develops it's voltage and supplies its current and energy by chemical processes going on everywhere inside the battery, so it's not applicable to talk about any particular current "through" a battery.

You might be interested in

if a swimmer is traveling at a constant speed of 0.85 m/s how long would it take to swim the length of 50 meter olymic sized poo

VARVARA [1.3K]

Answer:

58.82 Seconds

Explanation:

50m/0.85m/s=58.82s

7 0

2 years ago

Photoelectric effect:

Lynna [10]

Answer:

A. K = 0.546 eV

B. cooper and iron will not emit electrons

Explanation:

A. This is a problem about photoelectric effect. Then you have the following equation:

$K=h\nu-\Phi=h\frac{c}{\lambda} -\Phi$ (1)

K: kinetic energy of the ejected electron

Ф: Work function of the metal = 2.48eV

h: Planck constant = 4.136*10^{-15} eV.s

λ: wavelength of light = 410nm - 750nm

c: speed of light = 3*10^8 m/s

As you can see in the equation (1), higher the wavelength, lower the kinetic energy. Then, the maximum kinetic energy is obtained with the lower wavelength (410nm). Thus, you replace the values of all variables :

$K=(4.136*10^{-15}eV)\frac{3*10^8m/s}{410*10^{-9}m}-2.48eV\\\\K=0.546eV$

B. First you calculate the energy of the photon with wavelengths of 410nm and 750nm

$E_1=(4.136*10^{-15}eV)\frac{3*10^{8}m/s}{410*10^{-9}m}=3.02eV\\\\E_2=(4.13610^{-15}eV)\frac{3*10^{8}m/s}{750*10^{-9}m}=1.6544eV$

You compare the energies E1 and E2 with the work functions of the metals and you can conclude:

sodium = 2.3eV < E1

cesium = 2.1 eV < E1

cooper = 4.7eV > E1 (this metal will not emit electrons)

iron = 4.5eV > E1 (this metal will not emit electrons)

5 0

3 years ago

What does it mean to do science

Basile [38]

Answer:

Doing science could be defined as carrying out scientific processes, like the scientific method, to add to science's body of knowledge.

7 0

2 years ago

The name of the group of science that deals with earth and its neighbors in space is called

vfiekz [6]

Astrology is the answer

8 0

2 years ago

When temperature and pressure are applied to sedimentary and igneous rock?

spin [16.1K]

Answer:

Igneous rock

Explanation:

Igneous rocks are formed through the cooling and solidification of magma. It undergoes changes in temperature and pressure that causes it to cool, solidify, and crystallize.

6 0

3 years ago