What are the differences between the physics quantities of electric current and
ID: 1456023 • Letter: W
Question
What are the differences between the physics quantities of electric current and voltage? Draw a complete circuit with a battery, switch and an incandescent light bulb so that the bulb lights. Explain the mechanism behind the emission of light from the bulb. Draw a complete circuit with a battery, switch and a commercial resistor. What experiment do you need to conduct to collect data to make a function Iss(V) for the resistor? Describe the experiment and draw a hypothetical graph. How would the graph be different if the resistance of the resistor were greater? Explain.Explanation / Answer
Current
Symbol : I
Unit : A or amps or amperage
Definition : Current is the rate at which electric charge flows past a point in a circuit. In other words, current is the rate of flow of electric charge. .
Relationship : Current is the effect (voltage being the cause). Current cannot flow without Voltage.
Measuring Instrument : Ammeter
SI Unit : 1 ampere =1 coulomb/second.
Field created : A magnetic field
In series connection : Current is the same through all components connected in series.
In a parallel connection : Current gets distributed over components connected in parallel.
Voltage
Symbol :V
Unit V or volts or voltage
Definition : Voltage, also called electromotive force, is the potential difference in charge between two points in an electrical field. In other words, voltage is the "energy per unit charge”
Relationship : Voltage is the cause and current is its effect. Voltage can exist without current.
Measuring Instrument : Voltmeter
SI Unit : 1 volt = 1 joule/coulomb. (V=W/C)
Field created : An electrostatic field
In series connection : Voltage gets distributed over components connected in series.
In a parallel connection : Voltages are the same across all components connected in parallel.
Kindly post other questions separately
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.