Worksheetselectric current
Total questions: 21
Worksheet time: 10mins
An electrolyte is
a metal
a solution
a liquid that conducts electricity
none of these
Electroplating is based on ___________of an electric current.
Physical effect
Chemical effect
Heating effect
Magnetic effect
Adding common salt to distilled water makes it
Good Conductor
Poor Conductor
No change
Both A and B
An electrolyte is
a metal
a solution
a liquid that conducts electricity
none of these
Flow of electrons is called
Electrode
Electrolyte
Electric current
Electroplating
Electroplating prevents
electric current
chemical effect
lightening
rusting
Which of these is plated on the iron to prevent it from chemically reacting with food?
Gold
Chromium
Tin
Zinc
Out of the following, which metal is used to electroplate iron to make it shining and rust resistant?
Gold
Chromium
Zinc
Tin
Sugar solution is a good conductor of electricity.
True
False
Chromium corrodes easily.
True
False
Boojho’s uncle has set up an electroplating factory near his village.
He should dispose off the waste of the factory
in the nearby river.
in the corn field
according to the disposal guidelines of the local authority.
in the nearby pond
there are __________ types of effects of electric current
5
4
3
2
When electric current passes through a conducting solution, it causes _______ _______
chemical reactions
light effect
magnetic effect
nucleus reaction
Tick the chemical effect of elecric current
boiling
motion
electro shock
Electroplating
Who discovered chemical effect of elecric current?
Thomas Edison
Joule-Lenz
Michael Faraday
James Watt
Who discovered heating effect of elecric current?
James Watt
Joule-Lenz
Michael Faraday
Thomas Edison
Tick the electric apps working with mechanical effect of electric current
Juice squeezer
Electric oven
Compass
Electric kettle
When an electric current pass through by the conductors, the conductor ___________ ______
to begin crash
going to freeze
heats up
going to melt
One advantage for physiological effects of electric current
Respiratory paralysys
Organ start to burn
Tissue start to burn
Galvanotherapy
One disadvantage for physiological effects of electric current
Respiratory paralysys
Electro Shocker – for the safety
To do echo-cardiogram
Galvanotherapy
What kind of process don't go when observe the chemical effect of electric current
Formation of gas bubbles at the electrodes
Deposit of metal on the electrodes
Electric motor begin to move
Change in colour of the solution
