MEDIUM
10th ICSE
IMPORTANT
Earn 100

Give two difference between an ohmic and non-ohmic resistor.

Important Questions on Current Electricity

MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 21
Draw a V-I graph for a conductor at two different temperature. What conclusion do you draw from your graph for the variation of resistance of conductor with temperature?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 22
Define the term resistivity and state its S.I. unit.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 23
Write an expression connecting the resistance and resistivity. State the meaning of symbols used.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 24
State the order of resistivity of (i) a metal, (ii) a semiconductor, and (iii) an insulator.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 25
 Name two factors on which the resistivity of a wire depends?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 25
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
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 26
Give two differences between resistance and resistivity of a wire.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 27
Name a substance of which the resistance remains almost unchanged by the increase in temperature.