HARD
12th Odisha Board
IMPORTANT
Earn 100

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?

Important Questions on Electric Current

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.
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 2
Can a copper wire and an aluminium wire of the same length and same diameter have the same resistance? Why?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 3
Define temperature coefficient of electrical resistance.
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 4
A wire of length l and radius  r is connected to a voltage V. How the drift velocity of charges affected, if l is doubled?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 4
A wire of length l and radius r is connected to a voltage.  How the drift velocity of charges affected if, r is doubled
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 5
Two copper wires having the same length, but different cross-sections are connected to the same battery. How do the current densities in them compare?
HARD
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 5 - Electric Current>MODEL QUESTIONS>Q 6
Discuss the variation of resistivity with temperature