Number of elementary charge (usually in the event of electricity participate billions of electrons and thereby elementary charge) generates a particular electrical charge (symbol formula Q). Unit of electrical charge is set to 1 Coulomb (symbol C). In this case applies:
1 C = 6.24. 1018 elementary charge
We have described that
Strong current I = electric charge Q
Time t
means: Strong currents
We describe these equations into the Q, so that it becomes Q = I. t Thus the factors that affect the electric charge Q is determined by the current I and time t. In the meantime, we put current I in A and time t in s, so that the acquired unit is 1 As electric charge, which equates to 1 C.
1 Coulomb = 1 Ampere second
1 C = 1 As
Example :
A car battery is filled with 2.5 A.
How much electric charge after the battery charging time lasted for 10 hours?
Answer:
Q = I. t
Q = 2.5 A. 10 h = 25 Ah = 25 A. As 3600 s = 90,000 = 90,000 C
Potential difference
Electric potential is the amount of charge contained in an object. An object is said to have an electric potential is higher than other objects, if the object has a positive charge more than the positive charge other objects.
1:16 The electrical charge image on multiple objects
In Figure 1:16, it appears that the object A has a positive charge at most so that object A has the highest electrical potential, followed by object B, C, then D. What is the potential difference?
Electric potential difference (voltage) arises because the two objects have different electric potential are connected by a conductor. This potential difference serves to drain the charge from one point to another. Unit potential difference is volt (V). The tools used to measure electric potential difference is called voltmeter. Mathematically potential difference can be written as follows.
Description :
U: potential difference (V)
W: Usha / energy (J)
q: electric charge (C)