Find out the false.
Operating a switch with a dry hand.
Using wires without insulation.
Removing plug pins when the switch is off.
Changing bulbs when the switch is off.
Find out the true.
Metals are insulators
All materials are conductors
Metals are conductors
Heavy materials are conductors
The wrong instruction.
Switch of electrical devices after use
Ensure that street lights are switched off in time
Use lights and other equipments every time
Promote use of LEDs
This symbol indicates
Switch in the on mode
Fuse
Switch in the off mode
Conducting wire
----------- is used for electrification of houses.
Iron
Copper
Braze
Nickel
Which symbol denotes the fuse.
He discovered that a magnetic field is produced around a current-carrying conductor. Who?
Thomas Alva Edison
Alexander Graham Bell
Benjamin Franklin
Christian Oersted
