MECHANICAL FUNDAMENTALS UPDATED
2026
# Term Definition
1 Copper electrode is the...
Positive in a cell. It shreds its electrons to the hydrogen
ions to gain a positive charge. It attracts electrons from
negative electrode
2 Zinc electrode is...
Negative plate in a cell. This plate dissolves shredding
positive ions into electrolyte. It leaves an excess of
electrons on plate giving negative charge.
3 Electrolyte is...
Diluted sulphuric-acid that acts as a current carrier by
dissolving and combining with the zinc ions and copper
electrons
4 How is cell capacity measured? Ampere hours (A.h.)
5 Megawatts and kilowatts
What are larger power values measured
in?
6 Milliwatts and microwatts
What are smaller power values
measured in?
7 Define Energy The ability to do work
8 Define Power The rate of doing work
9 What is energy measured in? Joules
10 What is Power measured in? Watts
, 11 Power equation Energy ÷ time
12 Energy equation Power x time
13 1 horsepower equals ? Watts 746
14 A cathode is...
The electrode at which conventional current leaves the
electrolyte. It is therefore the positive electrode ot a
voltaic cell
# Term Definition
15 Anode is...
The electrode by which conventional current enters the
electrolyte. It is therefore the negative electrode of
voltaic cell
16 Polarization is...
The reduction in e.m.f. caused by this barrier or
hydrogen-gas bubbles
17 What collects around the copper? Hydrogen gas bubbles
18 Electrons flow from... The zinc through the external load to the copper
19 E.m.f. is Electromotive force
20 P.d. is Potential difference
21 How do you measure e.m.f? Put V meter across battery
22 How do you measure p.d?
Put V meter across resistance (radiator, motor etc)
2026
# Term Definition
1 Copper electrode is the...
Positive in a cell. It shreds its electrons to the hydrogen
ions to gain a positive charge. It attracts electrons from
negative electrode
2 Zinc electrode is...
Negative plate in a cell. This plate dissolves shredding
positive ions into electrolyte. It leaves an excess of
electrons on plate giving negative charge.
3 Electrolyte is...
Diluted sulphuric-acid that acts as a current carrier by
dissolving and combining with the zinc ions and copper
electrons
4 How is cell capacity measured? Ampere hours (A.h.)
5 Megawatts and kilowatts
What are larger power values measured
in?
6 Milliwatts and microwatts
What are smaller power values
measured in?
7 Define Energy The ability to do work
8 Define Power The rate of doing work
9 What is energy measured in? Joules
10 What is Power measured in? Watts
, 11 Power equation Energy ÷ time
12 Energy equation Power x time
13 1 horsepower equals ? Watts 746
14 A cathode is...
The electrode at which conventional current leaves the
electrolyte. It is therefore the positive electrode ot a
voltaic cell
# Term Definition
15 Anode is...
The electrode by which conventional current enters the
electrolyte. It is therefore the negative electrode of
voltaic cell
16 Polarization is...
The reduction in e.m.f. caused by this barrier or
hydrogen-gas bubbles
17 What collects around the copper? Hydrogen gas bubbles
18 Electrons flow from... The zinc through the external load to the copper
19 E.m.f. is Electromotive force
20 P.d. is Potential difference
21 How do you measure e.m.f? Put V meter across battery
22 How do you measure p.d?
Put V meter across resistance (radiator, motor etc)
