ᴡʜʏ sʜᴏᴜʟᴅ ᴛʜᴇ sᴘʀɪɴɢ/sᴜsᴘᴇɴsɪᴏɴ ᴡɪʀᴇ ɪɴ ᴀ ᴍᴏᴠɪɴɢ ᴄᴏɪʟ ɢᴀʟᴠᴀɴᴏᴍᴇᴛᴇʀ ʜᴀᴠᴇ ʟᴏᴡ ᴛᴏʀsɪᴏɴᴀʟ ᴄᴏɴsᴛᴀɴᴛ
Answers
Plasmodesmata (Pd) are co-axial membranous channels that cross walls of adjacent plant cells, linking the cytoplasm, plasma membranes and endoplasmic reticulum (ER) of cells and allowing direct cytoplasmic cell-to-cell communication of both small molecules and macromolecules (proteins and RNA).
We know that the torque produced by the current through the movement is the force that will move the needle. So in order that the meter can detect very small amounts of current, we need a very weak torsional “spring” opposing it. That does not affect the meter’s ability to measure larger currents or voltages because we only need an appropriate shunt to carry the majority of the current if our application is an ammeter or an appropriate multiplier to reduce the current in order to measure a higher voltage. Recall that voltmeters and ammeters are actually measuring amps. The voltmeter relies on the fact that amps are always in direct proportion to volts.