Good question. I have one of these chargers and my understanding is that it just needs to be plugged in. I'm not quite sure if the power needs to be on or off when it's charging but mine seem to work for multiple charges even when I thought it wasnt charged. I'm going to call the manufactuer and see what they have to say as well. I hope this some what helps.
That was my first answer and then I located the manufactuer
1. You plug an extension cord into it
2. plug it into a wall outlet
3. power it on
4. select the amps 2/4/6 by pressing the amp button once, twice or three times.
Do NT let the product charge for more than 3-4 hours
if your intrested in the manual just send me an e-mail to onyx@ce-x.com
Good Luck.
vector
Charge is not a vector.
Charge is a scalar quantity because it only has magnitude and no direction.
No, electrical charge is a vector quantity because it has both magnitude and direction.
The direction of the dipole moment is from the negative charge to the positive charge because it represents the vector pointing from negative charge towards positive charge, illustrating the net charge distribution within the molecule or system. This convention is commonly used to describe the direction of the dipole moment vector.
From an electric field vector at one point, you can determine the direction of the electrostatic force on a test charge of known sign at that point. You can also determine the magnitude of the electrostatic force exerted per unit charge on a test charge at that point.
Current Density describe how charge flow at certain point since current density = I/A and the vector direction tells you about the direction of flow at that point.
The electric field due to a line of charge is a vector field that points radially outward from the line of charge. Its magnitude decreases as the distance from the line of charge increases.
Definitely current is a SCALAR. Current density, of course, is a vector quantity Current = charge / time Both charge and time are scalars Current density = current / area Here area is a vector quantity Hence scalar product of current density and area give scalar quantity i.e. current. So electric current is a scalar Of course we assign +ve and -ve sign to currents. It is not because of direction as we do incase of vectors. But it is only algebraic sign.
Electric potential is a scalar quantity since work done and charge are scalars
Scientists use a positive test charge to determine the direction of the electric field vector. The electric field direction is defined as the direction in which a positive test charge would move when placed in the field. Thus, observing the force experienced by the positive test charge allows scientists to infer the direction of the electric field at that point.
A vector exception is a charge that had to be manually inputed into an account. Whether it be an old check, posting charges over a hard hold on an account, or even check that had to be clear by fraud operations. A quick call to your bank should illuminate you on why a charge had to be manually entered into the account.