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When a particular current flows through a resistance wire,

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Important Questions on Current Electricity

EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 2
There are two wires of the same material and lengths. The cross-sections of the wires are different. If the diameter of the first wire is double that of the second wire, then the specific resistance of the first wire will be
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 3
Which one of the following sets of properties are relevant for an electrical fuse wire needed for normal applications?
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 4
The utility of a safety fuse in an electric circuit depends on its low
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 5
Fuse wire is made of
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 6
When the distance between the two charges as well as their magnitudes is decreased to half, the force between them
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 7
If a voltage V is applied to a copper conductor and a current I flows through it. Which one of the following gives the relation between V and I?
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 8
The materials of negative electrode, positive electrode, electrolyte and depolariser of dry cell are respectively
EASY
NDA & NA EE
IMPORTANT
Pathfinder NDA / NA National Defence Academy and Naval Academy Entrance Examination Physics>Chapter 11 - Current Electricity>Practice Exercise>Q 9
Which one of the following is the reason for using fuses in household electrical circuits?