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Nikolay [14]
3 years ago
13

What causes charges to move in a circuit?

Physics
2 answers:
ipn [44]3 years ago
7 0
A )voltage
(i.e differance in electricity field)
SashulF [63]3 years ago
6 0

Answer:

a) Voltage

Explanation:

As we know that voltage difference and electric field is related as

E = \frac{\Delta V}{\Delta x}

now when we apply voltage across the length of any conductor then it will induce electric field inside the conductor.

Due to this electric field we can say that the free charge inside the conductor will experience electric force on it

F = qE

Due to this electric force free charge will start moving inside the conductor and it will form electric current

So here correct answer for electric current will be

a) Voltage

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A constant power is supplied to a rotating disc .the relationship of angular velocity of disc and number of rotations made by th
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3 years ago
A sound has a sound level of 30 dB. Its intensity is what multiple of the standard reference level for intensities?
arsen [322]
<h2>Answer:</h2>

1000th multiple of the standard reference level for intensities.

<h2>Explanation:</h2>

The sound intensity level (β), measured in decibels, of a sound with an intensity of I is defined as follows;

β = 10 log (I / I₀)       --------------------(i)

Where;

I₀ = reference intensity

Given from the question;

β = sound level = 30dB

Substitute this value into equation (i) as follows;

30 = 10 log (I / I₀)

Divide both sides by 3;

3 = log (I / I₀)

Take antilog of both sides;

10^(3) = (I / I₀)

1000 = I / I₀

Solve for I;

I = 1000I₀

Therefore the intensity of the sound is 1000 times the standard reference level for intensities (I₀)

7 0
3 years ago
If a scientist unknowingly breaks the law, he is guilty of _____.
Margaret [11]

Answer:

noncompliance

Explanation:

If a scientist unknowingly breaks the law, he is guilty of <u>noncompliance</u>

8 0
3 years ago
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