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2 years ago

A device for increasing or decreasing voltage through electromagnetic induction.

Physics

1 answer:

yaroslaw [1]2 years ago

6 0

Answer:

O Transformer

Explanation:

A transformer is a device for increasing or decreasing voltage through electromagnetic induction. It is very used in power transmission where alternating currents can be stepped up or down for house hold usage.

Electromagnetic induction is the process of generating current through magnetic fields.
It is made up of primary and secondary coils which helps to change voltage in the presence of magnetic filed at the core.
A transformer can either be a step up or step down device.

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A circular loop of radius 13 cm carries a current of 13 A. A flat coil of radius 0.94 cm, having 58 turns and a current of 1.9 A

telo118 [61]

Answer:

$6.28\times 10^{-5}\ \text{T}$

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Explanation:

$\mu_0$ = Vacuum permeability = $4\pi 10^{-7}\ \text{H/m}$

$I_l$ = Current in circular loop = 13 A

$r_l$ = Radius of circular loop = 13 cm

$N$ = Number of turns = 58

$r_c$ = Radius of coil = 0.94 cm

$I_c$ = Current in coil = 1.9 A

$\theta$ = Angle between loop and coil = $90^{\circ}$

Magnitude of magnetic field in circular loop

$B_l=\dfrac{\mu_0I_l}{2r_l}\\\Rightarrow B_l=\dfrac{4\pi 10^{-7}\times 13}{2\times 13\times 10^{-2}}\\\Rightarrow B_l=6.28\times 10^{-5}\ \text{T}$

The magnetic field produced by the loop at its center is $6.28\times 10^{-5}\ \text{T}$ .

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$\tau=\pi NI_cr_c^2B_l\sin\theta\\\Rightarrow \tau=\pi 58\times 1.9\times (0.94\times 10^{-2})^2\times 6.28\times 10^{-5}\sin90^{\circ}\\\Rightarrow \tau=1.92\times 10^{-6}\ \text{Nm}$

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astra-53 [7]

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<h3>Is Venus move faster than earth?</h3>

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Learn more about Venus here: brainly.com/question/2323914

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