Answer: Option (B) is the correct answer.
Explanation:
Direct current is a current which flows in one direction, that is, flow of electrons is only in one direction.
Whereas alternate current is a current which reverses periodically, that is, there will be change in direction of electrons after a period of time.
Thus, we can conclude that the statement, In DC, electrons move in only one direction. In AC, electrons move in one direction and then in the other direction defines AC and DC correctly.
Answer:
4.7 × 10⁵J
Explanation:
E = I * a * t
80% = 0.80
25cm = 0.25m
52cm = 0.52m
0.90h = 3240s
E = (0.80)(1400)(0.25 * 0.52)(3240)
= 4.7 * 10⁵J
The semiconductor device that produces electric current through the effect is termed as transistor.
To find the answer, we have to know more transistor.
<h3>What is transistor?</h3>
- Transistors come in two different types: field-effect transistors and bipolar junction transistors.
- The formation of two p-n junctions in various configurations, such as n-p-n or p-n-p, results in bipolar junction transistors.
- The emitter, collector, and base, or middle region, are the three areas that form in a transistor.
- The conductivity of the field-effect transistor, which is based on the conductivity principle, can be changed by an electric field.
Thus, we can conclude that, the semiconductor device that produces electric current through the effect is termed as transistor.
Learn more about transistor here:
brainly.com/question/1345827
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A waterwheelis the answer pls thank me
Answer:
44200 N
Explanation:
To calculate the average force exerted on the car, we will use the following equation
Where F is the average force, t is the time, m is the mass, vf is the final velocity and vi is the initial velocity of the car.
Replacing t = 0.5s, m = 1300 kg, vf = -2 m/s, and vi = 15 m/s and solving for F, we get
Therefore, the average force exerted on the car by the wall was 44200 N
