3 years ago

Write down the principle of lever? = ????

1 answer:

7 0

The principle of a lever is when two equal forces act in opposite directions and ultimately come to a state of equilibrium if distanced properly

i hope that helps?^

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3 years ago

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One hundred turns of insulated copper wire are wrapped around an iron core of cross-sectional area 0.100m2. As the magnetic fiel

bagirrra123 [75]

Answer:

The voltage induced in the coil is 1.25 V.

Explanation:

Given;

number of turns, N = 100 turns

cross sectional area of the copper coil, A = 0.1 m²

initial magnetic field, B₁ = 0.5 T

final magnetic field, B₂ = 1.00 T

duration of change in magnetic field, dt = 4 s

The induced emf in the coil is calculated as;

$emf = -N\frac{\delta \phi}{\delta t} \\\\emf = - N (\frac{\delta B}{\delta t}) A\\\\emf = -N (\frac{B_1 -B_2}{\delta t} )A\\\\emf = N(\frac{B_2-B_1}{\delta t} )A\\\\emf = 100(\frac{1-0.5}{4} )0.1\\\\emf = 1.25 \ Volts$

Therefore, the voltage induced in the coil is 1.25 V.

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3 years ago

Write down the principle of lever? = ????​

Write down the principle of lever? = ????