Which body
parts are more vulnerable to electric shock?
a) heart
b) brain
c) hands
d) both a and b
Why damp places increase the severity of an electric shock?
a) water is insulator
b) water lowers the resistance of the body
c) water carry negative charges d) all of these
Which of the following ways will reduce the severity of an electric shock?
a) wearing rubber-soled shoes and gloves
b) standing on a dry insulating floor
c) wearing metallic-soled shoes
d) both a and b
Which of the measure/s is/are to be taken to avoid the risk of getting an electric shock?
a) switch of electricity before repairing
b) use plugs that have an earth pin
c) do not allow electrical appliances in contact with water
d) all of these
Which
of the measure/s is/are to be taken to avoid the risk of overheating cables?
a) use plugs that have the correct fuse
b) do not attach too many appliances to a single outlet
c) avoid using thin wires
d) all of these
Electromagnets:
An electromagnet is a type of magnet in which the
magnetic field is produced by an electric current. Electromagnets usually
consist of wire wound into a coil. A current through the wire creates a
magnetic field which is concentrated in the hole, denoting the center of the coil.
