EASY
10th ICSE
IMPORTANT
Earn 100

Define the term resistivity and state its S.I. unit.

Important Questions on Current Electricity

EASY
10th ICSE
IMPORTANT
Write an expression connecting the resistance and resistivity. State the meaning of symbols used.
MEDIUM
10th ICSE
IMPORTANT
State the order of resistivity of (i) a metal, (ii) a semiconductor, and (iii) an insulator.
EASY
10th ICSE
IMPORTANT
 Name two factors on which the resistivity of a wire depends?
EASY
10th ICSE
IMPORTANT
Two wires Aand B are made of copper. The wire A is long and thin while the wire B is short and thick. Which will have more resistivity ?
EASY
10th ICSE
IMPORTANT
Give two differences between resistance and resistivity of a wire.
MEDIUM
10th ICSE
IMPORTANT
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
MEDIUM
10th ICSE
IMPORTANT
Name the material used for making the connection wires. Give a reason for your answer.
MEDIUM
10th ICSE
IMPORTANT
Name a material which is used for making the standard resistor. Give a reason for your answer.