The average electric current in the lightning will be 8 × 
A
<h3>
Why Lightning Conductors on top of a tower ?</h3>
The lightning conductors are long metal strips running from the spike end of a conductor on the top of a building to the earth. They are used to prevent buildings from destruction when struck by thunder or lightning.
Given that a lightning strike can transfer as much as electrons from the cloud to the ground. if the strike lasts 2ms, to calculate the average electric current in the lightning, we will first consider the charge released.
one charge = 1.6 × 
C
Average current I = Q/t
Where
- Q = charge = 1.6 × C
- t = time = 2ms = 2 ×
s
Substitute all the parameters into the formula
I = 1.6 × C ÷ 2 ×
I = 8 × A
Therefore, the average electric current in the lightning will be 8 × A
Learn more about Lightning here: brainly.com/question/3183045
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Answer:
(a) 108
(b) 110.500 kW
(c) 920.84 A
Solution:
As per the question:
Voltage at primary, 
(rms voltage)
Voltage at secondary, 
(rms voltage)
Current in the secondary, 
Now,
(a) The ratio of secondary to primary turns is given by the relation:
where
= No. of turns in primary
= No. of turns in secondary
≈ 108
(b) The power supplied to the line is given by:
Power, P = 
(c) The current rating that the fuse should have is given by:
Answer:
Explanation:
Given
frequency of wave 
We know velocity is given by
where 
=wavelength
Answer:
23.1mL
Explanation:
Given parameters:
Initial volume of the gas = 25ml
Initial pressure = 740torr
Final pressure = 800torr
Unknown:
Final volume = ?
Solution:
To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant"
P₁ V₁ = P₂ V₂
P and V are pressure and volume
1 and 2 are initial and final states
Insert the parameters and solve;
740 x 25 = 800 x v₂
v₂ = 23.1mL
Part a) The relationship between the electric field and the magnetic field of an electromagnetic wave is
where
E is the intensity of the electric field
B is the intensity of the magnetic field
c is the speed of light
Using the formula, we find:
part b) it is not specified in the text what is the verse of the magnetic field on the y-axis: I assume its direction is y+.
We can find the direction of the electric field by using the right-hand rule, where:
- the index finger gives the direction of E
- the middle finger gives the direction of B
- the thumb gives the direction of propagation of the wave
since the direction of propagation is x+, and the direction of the magnetic field is y+, we can see that the direction of the electric field (index finger) is z-.
