MEDIUM
12th Odisha Board
IMPORTANT
Earn 100

Give the relation between current and current density vector.

Important Questions on Electric Current

HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 16
Does a conductor become charged when it carries current?
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 17
We often say" a current flows through a wire". What exactly flows charge or current?
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 18

Out of two bulbs marked "220V 25 W"  , 220V 100 W", which one has the higher resistance?

 

MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 19
Which physical quantity represents the slope of voltage versus current graph of a metallic conductor?
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 20
Why Manganin is used for making standard resistances?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 21
How does the drift velocity of electrons in a metallic conductor changes if the length of the conductor is doubled by stretching it, keeping the applied potential difference constant?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 22
What is the effect of heating of a conductor on the drift velocity of free electrons?
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 1
Distinguish between resistance and resistivity.