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Complete Question:
What is the power in a circuit that has a current of 12 amps and a resistance of 100 ohms?
Answer:
D. 14,400 watts
Explanation:
The electrical power of an electric circuit can be defined as a measure of the rate at which energy is either produced or absorbed in the circuit.
Mathematically, electrical power is given by the formula;
This ultimately implies that, the quantity (current times voltage ) is electrical power and it is measured (S.I units) in Watt (W).
<u>Given the following data;</u>
- Current = 12 Amperes
- Resistance = 100 Ohms
To find the power in the circuit, we would use the following formula;
Power = I²R
Where;
- I is current measured in Amperes.
- R is resistance measured in Ohms.
Power = 12² * 100
Power = 144 * 100
<em>Power = 144,000 Watts</em>
Answer:
Ke=electron kinetic energy=
Explanation:
The electron has a mass of
The speed of light in a vacuum is a universal constant with the value 299 792 458 m / s (186 282,397 miles / s), although it is usually close to
Kinetic energy (K) is the energy associated with bodies that are in motion, depends on the mass and speed of the body and is calculated using the formula:
Equation(1)
K=kinetic energy (J)
m =mass of the body (kg)
v= speed of the body
for this problem We replace in the equation (1)
= electron mass
=Half the speed of light
=electron speed
We replace in the equation (1) :
The energy kinetic of the electron is