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3 years ago

How is an ammeter connected in a circuit?

1 answer:

6 0

An ammeter is connected series in a circuit. An ammeter is used to detect how much current is flowing through the circuit, so the Resistance of ammeter is very low by connecting it parallel to a circuit this may cause short circuit and burn the ammeter or the circuit.

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What is the electric field (given as a vector) at coordinates (x,y,z) = (1m,2m,2m) produced by a point charge of 4 μC sitting at

joja [24]

Answer:

$\vec{E} = 1.334\hat{i} + 2.668\hat{j} + 2.668\hat{k}$ N/C

Solution:

Charge, Q = $4\mu C = 4\times 10^{- 6} C$

Coordinates (x, y, z) are (1, 2, 2)

Now, we know that the Electric field at any point in the Cartesian plane is given by:

$\vec{E} = \frac{1}{4\pi epsilon_{o}}\times \frac{Q}{|d|^{2}}\hat{d}$ (1)

where

$\frac{1}{4\pi epsilon_{o}} = 9\times 10^{9} N-m^{2}/C^{2}$

d = distance of the charge from the point

$\hat{d} = \hat{i} + 2\hat{j} + 2\hat{k}$

$|d| = \sqrt{1^{2} + 2^{2} + 2^{2}$

Now, from eqn (1):

$\vec{E} = 9\times 10^{9}\times \frac{4\times 10^{- 6}}{(\sqrt{1^{2} + 2^{2} + 2^{2})^{2}}}\times (\hat{i} + 2\hat{j} + 2\hat{k})$

$\vec{E} = 1.334(\hat{i} + 2\hat{j} + 2\hat{k})$ N/C

$\vec{E} = 1.334\hat{i} + 2.668\hat{j} + 2.668\hat{k}$ N/C

6 0

3 years ago

Warm air has greater pressure then cool air. True or False

ruslelena [56]

Your description of the experiment is very sketchy.

If you have a jar full of air, sealed so that no air can get in or out,
then the pressure is lower when you cool the jar, and higher when
you heat the jar.

6 0

4 years ago

A pogo stick has a spring with a force constant of 2.50 × 104 N/m , which can be compressed 11.2 cm. what maximum height, in met

AleksandrR [38]

Answer:

h = 36.4 cm

Explanation:

given,

spring constant = 2.5 x 10⁴ N/m

compressed distance = 11.2 cm = 0.112 m

mass of the child = 44 kg

maximum height = ?

by energy of conservation

$K.E_i +P.E_i= K.E_f + P.E_f$

$\dfrac{1}{2}kx^2 = mgh$

$\dfrac{1}{2}\times 2.5 \times 10^4 \times 0.112^2 = 44\times 9.8 \times h$

$156.8 = 44 \times 9.8 \times h$

$h = \dfrac{156.8}{44 \times 9.8}$

h = 0.364 m

h = 36.4 cm

7 0

3 years ago

How are galaxies created

marishachu [46]

Hi There! :)

How are galaxies created

Instead of large gas clouds collapsing to form a galaxy in which the gas breaks up into smaller clouds, it is proposed that matter started out in these “smaller” clumps (mass on the order of globular clusters), and then many of these clumps merged to form galaxies, which then were drawn by gravitation to form galaxy ...

4 0

4 years ago

The inside of a race car often looks very different from the inside of a normal car. Race car teams often remove seats and other

Digiron [165]

Explanation:

A race car's main target is how to have rapid acceleration by scaling its speed. Acceleration of car is mostly a product of the force of the car engine.

According the newtons second law"The acceleration of body in motion depends on two main variables, the net force acting on it and the mass".

It is also written mathematically as:

F = m x a

F is the net force produced by the engine

m is the mass of the car

a is the acceleration.

Re-writing the equation:

Now Acceleration = $\frac{Force }{mass}$

We can see that acceleration is directly related to increasing force but inversely proportional to the mass.

A race car needs to have a good acceleration so as to attain top speed.

The more the mass, the less the acceleration.

This is why extra weight like the seats are expunged.

learn more:

Newton's laws brainly.com/question/11411375

#learnwithBrainly

7 0

3 years ago