In electrical work, resistance is often represented by thea. Greek symbol O.
c. letter V.
b. letter I.
d. letter E.
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Answer : The correct option is, (a) Greek symbol O
Explanation :
Resistance : It is defined as the property of a material which resist the flow of charges through it.
Resistance is represented as, Ohm, (in symbol) and uppercase Omega (in Greek symbol).
Hence, in electrical work, resistance is often represented by the Greek symbol O.
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A) 10 Ω
B) 15 Ω
C) 20 Ω
D) 55 Ω
Answers
Answer:
Resistor R₃ = 10 Ω
Explanation:
It is given that,
Current flowing in the circuit, I = 2 A
Resistors R₁ = 2 Ω
Resistor R₂ = 3 Ω
Voltage, V = 30 V
We have to find the value of R₃. All three resistors are connected in series. In series combination, the current flowing through the all resistors is same. Firstly, calculating equivalent resistance of three resistors as :
..............(1)
Using Ohm's law :
On solving above equation :
Hence, the correct option is (A) " 10 Ω "
The value of R3 is A) 10 Ω
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mark brainliest ;)
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Static Friction is acting upon the book
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The answer is B i just took the test and got it correct!
b. Chemistry
c. Astronomy
d. None of the above User: Scientific knowledge is
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Answer: The acceleration doubles
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Explanation:
Consider a mass of 10 kg, so m = 10
Let's say we apply a net force of 20 newtons, so F = 20
The acceleration 'a' is...
F = ma
20 = 10a
20/10 = a
2 = a
a = 2
The acceleration is 2 m/s^2. Every second, the velocity increases by 10 m/s.
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Now let's double the net force on the object
F = 20 goes to F = 40
m = 10 stays the same
F = ma
40 = 10a
10a = 40
a = 40/10
a = 4
The acceleration has also doubled since earlier it was a = 2, but now it's a = 4.
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In summary, if you double the net force applied to the object, then the acceleration doubles as well.
Acceleration is directly proportional to the net force on an object, and inversely proportional to its mass.
So if an object's mass stays the same while the net force on it doubles, then its acceleration will also double.
We don't know anything about the "trials". This sounds like it might be a follow-up to a lab experiment that was performed when we weren't there.
We also don't know anything about "question 1".