Answer: R=24.2Ω
Explanation: <u>Power</u> is rate of work being done in an electric circuit. It relates to voltage, current and resistance through the following formulas:
P=V.i
P=R.i²
The resistance of the system is:
R = 24.2Ω
<u>For the device, resistance is 24.2Ω.</u>
Answer:
Explanation:
Energy of radiation in eV = 1237.5/280 = 4.42 eV.
Work function = 2.65 eV.
Maximum kinetic energy = 4.42 - 2.65 = 1.77 eV.
The initial voltage at the primary= 750 V
Explanation:
for a transformer
Es/ Ep= Ns/ Np
Es= secondary voltage= 240 V
Ep= primary voltage
Ns= number of turns in the secondary=8
Np= Number of turns in the primary=25
so 240/Ep=8/25
Ep=750 V
Answer:
For it is a Globular Cluster
Explanation:
These Globular clusters are not considered to be a galaxies because they bond gravitationally to orbiting galaxies like the Milky Way and their masses are relatively small.
In globular clusters, the stars are closed together and they are like 70times closer to one another in their solar neighbourhood.
A globular cluster is a spherical collection of stars that orbits a galactic core. Globular clusters are very tightly bound by gravity, which gives them their spherical shapes, and relatively high stellar densities toward their centers.
