SI Units are based on meters, kilograms, seconds, amperes, kelvins, candelas, and moles, together with a set of prefixes to indicate multiplication or division by a power of ten.
There are seven SI base units, which are:
m - Meter - Length.
s - Second - Time.
mol/Mole - Amount of Substance.
A - Ampere - Electric Current.
K - Kelvin - Temperature.
cd - Candela - Luminous Intensity.
kg - Kilogram - Mass.
I think that the delivered units are how they are used such as watts which are equal to one joule per second. Others are “ergs per second (erg/s), horsepower (hp), metric horsepower (Pferdestärke (PS) or cheval vapeur (CV)), and foot-pounds per minute.”
So, SI base units are the basic units of things such as length or temperature. This would mean that the delivered units are the specific units per something like miles per hour.
It’s literally in your reading go re reas
Answer:
a. R2b = R/4
Explanation:
The total resistance of a metallic wire is given by the following formula:
R = ρL/A
where,
R = Resistance of Wire
ρ = Resistivity of the material of wire
L = Length of Wire
A = Area of Wire = πr²
Therefore,
R = ρL/πr²
for the 1st wire,
radius = r = b
Therefore,
R = ρL/πb² ----------- equation 1
Now, for the second wire,
r = 2b
Therefore,
R2b = ρL/π(2b)²
R2b = ρL/πb²4
using equation 1:
R2b = R/4
therefore, correct option is:
<u>a. R2b = R/4</u>
