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WorksheetsCurrent Electricity 6
Total questions: 12
Worksheet time: 6mins
The unit of resistivity is
Ω/m
Ω/m2
Ω.m
Ω.m2
The nichrome wire has a cross-sectional area of 1.3 × 10–7 m2 . Resistivity of nichrome = 1.1 × 10–6 Ωm and a resistance of 53 Ω. The length of the wire is
0.63m
63m
0.0063m
6.3m
Resistance is proportional to
l
ρ1
A
l1
Resistivity
changes with conditions
relies on dimensions of the material
inversely proportional to resistance
a property of the material
The length of a certain conductor of resistance 100 Ω is doubled. Its new resistance is
100 Ω
50 Ω
200 Ω
400 Ω
The cross-sectional area of a certain conductor of resistance 100 Ω is halved. Its new resistance is
100 Ω
50 Ω
200 Ω
400 Ω
The length of a certain conductor of resistance 100 Ω is doubled and its cross-sectional area is also doubled. Its new resistance is
100
50
200
400
This is the symbol for a...
Thermistor
Fixed Resistor
Variable Resistor
Fuse
What is the name of the resistor shown?
Thermistor
Fixed resistor
Rheostat
None of the above
