Classification of Sedimentary Rocks (Part 1). Sedimentary rocks are classified based on their texture and composition. Detrital sediment has a clastic (broken) texture. Chemical and organic sediments have a non-clastic texture, and are classified based solely on their composition.
Galvanometer vs Ammeter. Ammeter and galvanometer are two devices that are used in the field of electronic and electrical measurements. Galvanometer is a very important device that is used to develop other measuring devices. It is also used to measure electrical currents. Ammeter is also a device that is used to measure electrical current.
An ammeter measures the voltage across a resistor with a known value, and. from that it calculates the current through the resistor. The resistor has to be. a very small value, so that it doesn't change the current in the circuit by being. placed in line with it.o use it, open (break) the circuit whose current you want to. measure, and connect your meter into the hole. Read the voltmeter. The. current passing through your resistor is. (the voltmeter reading) divided by (the resistance of your resistor).