electric charge is measured by What thing
Answers
Answer:
electric charge is measured by What thing
Answer:
ic current consists of moving charged particles. So the charged particles are moving around a circuit.
To make sense of electric circuits you'll have to model the behaviour of currents in circuit loops. Now we'll consider how electric currents can be measured and how we can make sense of these measurements.
The electric current in one part of a circuit is measured with an ammeter, which gives a reading in ampere.
To take the measurement, a gap is made in the circuit and the ammeter is connected into that gap, so that the charged particles moving around the circuit must pass through the meter.
Since the ammeter is connected directly into the circuit, it must have a low resistance so that it does not reduce the flow of charge, which it is being used to measure.
Increasing the current
What does the ammeter actually measure when it is connected in a circuit? You might visualise the working of an ammeter as counting charges as they move through the instrument, to see how many pass each second. The amount of charge passing per second is a measure of the electric current:
Lots of charged particles passing per second: a large current
Few charged particles passing per second: a small current
We can refine this to electric current = amount of charge passing per second.
This is equivalent to electric current = rate of flow of charge.
More formally, perhaps:
current =
charge
duration
You can write this out in symbols:
I =
Q
t
Where I is current; Q is charge; t is time for which charge flows (the duration).
Explanation:
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