WorksheetsResistivity And Conductivity
Total questions: 8
Worksheet time: 11mins
Consider the circuit:
R1=2Ω, R2=4Ω, R3=R4
The current flowing through the entire circuit is 40A
. What is the value of R3?
0.77Ω
2.6Ω
1.5Ω
0.54Ω
Which of the following factors would decrease the resistance through an electrical cord?
Decreasing the cross-sectional area of the cord
Increasing the cross-sectional area of the cord
Increasing the resistivity
Increasing the length of the cord
What is the current in a circuit with a 2Ω
resistor followed by a 3Ω
resistor that are both in parallel with a 5Ω
resistor? The voltage supplied to the circuit is 5V.
5A
1.5A
2A
1A
By how much will resistivity change if resistance and length are constant, and cross sectional area is doubled?
The resistivity will be quadrupled
The resistivity will not change
The resistivity will be halved
The resistivity will double
The unit of conductance cannot be expressed in
mho
(ohm)-1
ohm/m
siemens
Good conductors have many loosely bound
atoms
protons
molecules
electrons
The element with the highest conductivity is
Gold
Silver
Copper
Mercury
The reciprocal of resistivity of a conductor is
conductance
capacitance
conductivity
none of these
