D. Something that has air molecules is not required for current to flow through a conductor
Further explanation
Electric current (symbolized by the letter "i) is the amount of charge flowing in the conductor of each unit of time
Can be formulated:
[tex]\large{\boxed{\bold{I=\frac{Q}{t}}}[/tex]
Q = charge (Coulomb)
t = time (seconds)
The international standard unit of electric current is Coulomb/second or Ampere (A).
Electric current is also a ratio between the voltage and the amount of resistance at the conductor.
Can be formulated
[tex]\large{\boxed{\bold{I=\frac{V}{R}}}[/tex]
V = Voltage (volts)
R = resistance (ohms)
This formula is also known as Ohm's Law, which states that
the amount of current flowing is directly proportional to the voltage and inversely proportional to the resistance.
The direction of the electric current is opposite to the direction of the electron, moving from the positive pole to the negative pole, from the high potential to the low potential
In a simple electrical circuit, electrical current occurs because of:
- 1. voltage source
- 2. conductor
- 3. energy user components such as light bulb
This electrical circuit can occur through a series or parallel
From the above questions we can see the available answer choices:
- A. Source of electrical current
Electrical voltage sources can cause potential differences.
The mains voltage can be Direct Current (DC) like a battery or alternating current (AC) like a generator
- B. Something to transport the current
Conductors are substances that can conduct electricity. This substance can be a solid, liquid or gas. each substance has a different ability to conduct electricity.
Substances that cannot conduct electricity are called insulators
- C. Something that causes current to flow through a conductor
The flow of electricity that occurs in the conductor is due to a difference in potential, moving from high to low potential. the greater the potential difference, the greater the current flowing
- D. Something that has air molecules
Something that has air molecules is not related to electric current
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Keywords : electric current, potential difference, Source of electrical current
