Answer:
The answer is "A raised, flat-surfaced area bound on one or more sides by cliffs or steep slopes."
Explanation:
Answer:
The second law of thermodynamics describes the direction in which heat is transferred between systems, <u>heat is a form of energy</u> in transition.
This law says that heat or energy always flows spontaneously from the body or system with a higher temperature to a lower temperature system (from something hot to something cold, and not the other way around).
This is why if we leave an ice at room temperature it will eventually melt, because <u>the environment transferred energy to the ice</u> and caused its temperature to increase and thus to turn into a liquid form.
The second law can also be interpreted in terms of entropy, and tells us that entropy, which is often interpreted as a measure of disorder, always increases.
As a transformer generates ac current of different voltage when the switch is closed and the current flows in the primary coil which induces a magnetic field.
Answer: Option 2
<u>Explanation:</u>
A transformer is an electric device which can vary the potential differences or voltages of an alternating current. It's a simple device composed of an iron core, a primary and the secondary current conducting coil.
The primary coil is attached to the switch which provides ac current through potential difference. Now this current induces a magnetic field in the iron core. When the voltage of this ac current is varied, the magnetic field varies and starts inducing ac current of different voltage in the secondary coil.
Thus, an AC current of different voltage flows in the secondary coil that can be used in small electric devices. This is how a transformer works. There are two kinds of transformers- Step Up and Step Down. A step up transformer increases the potential difference whereas the step down does the opposite.
Statement A is true.
When two resistors are connected in series, they result in an equivalent resistance greater than their individual values. A larger resistance causes lesser current to flow.
When two resistors are connected in parallel, they result in an equivalent resistance lesser than their individual values. A lesser resistance causes more current to flow.
So statement A is the correct answer.
When two resistors are connected in series, there is less total current in the circuit than if the two resistors were connected in parallel.