WorksheetsChemical Effects of Electric Current
Total questions: 9
Worksheet time: 5mins
Which of the following is responsible for the flow of current through a metallic conductor?
Valence electrons
Lone pair of electrons
Free electrons
None of the above
Electrons move easily in
insulators
conductors
capacitors
none of the above
Substances having very large number of free electrons, which can be drifted in a particular direction by applying potential difference , are called
Insulators
Bad conductors
Good conductors
Semiconductors
A/ An ________ is used to provide electricity to the bulb in a torch .
electric switch
electric motor
electric cell
screw driver
The thin wire attached in the centre of a bulb is called _________
filament
electric cell
torch
electrode
The lower part of a bulb is called _____.
metal
apex
base
armature
The electrolyte used to electroplate Cu on the spoon is
CuSO4
AgNO3
ZnSO4
None of the above
An electrolyte is a compound which in its molten or aqueous state conducts an electric current by decomposing the current.
True
False
A crystal of NaCl can conduct electricity.
True
False
