AMMETERS & VOLTMETERS ammeter bobbin moving coil instrument spring control moving iron instrument damping iron revolution spindle permanent magnet repulsion type supply attraction type

AMMETERS & VOLTMETERS electromagnetic type-moving iron meter suck into air-dash-pot moving coil meter purpose axis, spindle employ repulsion type a small piece of soft iron attraction type to attract long, oblong to install, set, mount

THINGS TO WEAR TO STAY SAFE safety safe (прил.) THINGS TO WEAR TO STAY SAFE dangerous -latex gloves fiberglass -a uniform DANGERS AT WORK -safety glasses -high voltage -a hard hat -electric shock -steel toe boots -heavy objects -a rubber mat -stripped wires -an arc shield -falling -arc flash clothing -explosion -a hot stick -fire

electrical safety at work a way of doing smth. securely turn on\off to nail \ to staple switch on\off a baseboard Appliances to plug in an electrical hazard a three-prong adapter fire prevention a plug unused outlets a zip cord safety covers temporary repairs traffic worn out wires a flame of fire flammable items

more actions to connect wires to push a button to bind cords to dig into the ground to pull a rope to strip the insulation off to push a cart to twist the ends of wires to inspect a circuit tape to lead to ignition to install waterproof covering to cause fires to splice wires to make sure

Elements of electricity Ex.1 We can measure electricity by a multimeter. We can measure electricity by calculations. I strip off the insulation by a stripper. We can cut wires by long-nose pliers.

Elements of electricity basics of electricity a source of electricity electric current DC (direct current) AC (alternating current) differences between AC and DC units of measurement (amperes, volts, watts, ohms) to calculate resistance

effects produces by a current Effects of electricity Heating effects Chemical effects Magnetic effects