Over a million students use our free study notes to help them with their homework
V=IR, where V is voltage (volts), I is current (amps) and R is resistance (ohms). Since V and R are known, I needs to be found. Rearranging the equation gives: I=V/R. Inputting the value...
This is all down to static electricity.
Inside the Van de Graaff generator, there is a rubber band and rollers. As they are electrically insulated, when the motor turns they rub together ...
As often described, a vector is a quantity that has a magnitude and a direction, whereas a scalar just has a magnitude. The easiest way to thing about it is to physically think if you could point in a dir...
A Frequency of 440Hz means that the wave is oscillating 440 times in one second. Ie. 440 waves are produced every second
A cell is a single unit of a power supply which uses chemical energy to produce energy. A battery is a group of cells joined in series.
←
110
111
112
113
114
→
Internet Safety
Payment Security
Cyber
Essentials
