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3 years ago

The generation of a magnetic field by an electric current is _____

Physics

2 answers:

lara [203]3 years ago

7 0

The generation of a magnetic field by an electric current is _electromagnetism_.

ANTONII [103]3 years ago

5 0

Answer: The correct answer is "electromagnetism".

Explanation:

Electromagnetism: it is an interaction of the electricity and the magnetism.

When the current flows in the conductor then the magnetic field lines are produces around the current carrying conductor. Here, the electric current generates magnetic field. The motion of the charges produces both electric field and the magnetic field.

This phenomenon was discovered by Oersted.

If the amount of current increases then the strength of the magnetic field will also get increase. The strength of the magnetic field depends on the amount of current flowing in the conductor.

Therefore, the generation of a magnetic field by an electric current is electromagnetism.

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Sammy is talking to Sally. Position A is a position in front of Sammy's mouth. Position B is a position in front of Sally's ear.

notka56 [123]

Answer:

Explanation:

To listen the sound, the air particles must vibrates.

As the sound energy produce vibrations in the medium, so the air column exerts pressure, and then the air molecules set into vibrations and we hear sound as the diaphram set into vibrations.

3 0

3 years ago

When a particular wire is vibrating with a frequency of 4.00 Hz, a transverse wave of wavelength 60.0 cm is produced. Determine

astraxan [27]

Answer : The speed of waves along the wire is, 1.2 m/s

Explanation :

Formula used :

$\nu=\frac{c}{\lambda}$

where,

$\nu$ = frequency = $4.00Hz=4.00s^{-1}$

$\lambda$ = wavelength = $30.0cm=0.3m$

c = speed of wave = ?

Now put all the given value in the above formula, we get the speed of waves along the wire.

$4.00s^{-1}=\frac{c}{0.3m}$

$c=1.2m/s$

Thus, the speed of waves along the wire is, 1.2 m/s

6 0

3 years ago

The cheetah, the fastest of land animals, can run a distance of 274 m in 8.65 s at its top speed. What is the cheetahs tips spee

ycow [4]

Answer:

Top speed is 31.68 m/s

Explanation:

Speed of a body is the distance traveled by the body in unit time.

Speed is generally expressed in meter per second or kilometer per hour.

Here, the cheetah travels a distance of 274 m in 8.65 s.

Therefore, speed of cheetah is the distance traveled by it in one second.

For 8.65 s, distance traveled is 274 m

For 1 s, distance traveled will be $\frac{274}{8.65}$ meters per second. This value is called speed.

So, speed is given as the ratio of the distance traveled to that of the time taken.

∴ Top speed of cheetah is given as:

$v_{max}=\frac{274}{8.65}=31.68 \textrm{ m/s}$

Here, $v_{max}$ is the top speed of cheetah.

7 0

4 years ago

A 120 V electric heater draws a current of 14.1 A. What is the resistance, in ohms?

Sav [38]

Answer:

8.5 ohms

Explanation:

from ohms law

V=IR

120=14.1R

divide both sides by 14.1

120/14.1=14.1R/14.1

R=8.5ohms

5 0

3 years ago

Read 2 more answers

By method of dimension show that the following equation are homogenous.

il63 [147K]

Answer:

Proof in explanataion

Explanation:

The basic dimensions are as follows:

MASS = M

LENGTH = L

TIME = T

Given equation is:

$H = \frac{u^2Sin^2\phi}{2g}$

where,

H = height (meters)

u = speed (m/s)

g = acceleration due to gravity (m/s²)

Sin Ф = constant (no unit)

So there dimensions will be:

H = [L]

u = [LT⁻¹]

g = [LT⁻²]

Sin Ф = no dimension

Therefore,

$[L] = \frac{[LT^{-1}]^2}{[LT^{-2}]}\\\\\ [L] = [L^{(2-1)}T^{(-2+2)}]$

Hence, the equation is proven to be homogenous.

ii)

$F = \frac{Gm_1m_2}{r^2}\\\\$

where,

F = Force = Newton = kg.m/s² = [MLT⁻²]

G = Gravitational Constant = N.m²/kg² = (kg.m/s²)m²/kg² = m³/kg.s²

G = [M⁻¹L³T⁻²]

m₁ = m₂ = mass = kg = [M]

r = distance = m = [L]

Therefore,

$[MLT^{-2}] = \frac{[M^{-1}L^{3}T^{-2}][M][M]}{[L]^2}\\\\\ [MLT^{-2}] = [M^{(-1+1+1)}L^{(3-2)}T^{-2}]\\\\$

Hence, the equation is proven to be homogenous.

8 0

3 years ago