EASY
12th CBSE
IMPORTANT
Earn 100
Plot a graph showing the variation of resistance of a conducting wire as a function of its radius, keeping the length of the wire and its temperature as constant.
Important Questions on Current Electricity
EASY
12th CBSE
IMPORTANT
The current flowing through a conductor is at and at . Is it an ohmic or non-ohmic conductor?
EASY
12th CBSE
IMPORTANT
Does the value of resistance of a conductor depend on the potential difference applied across it or the current passed through it?
EASY
12th CBSE
IMPORTANT
Is the formula true for non-ohomic resistance also?
EASY
12th CBSE
IMPORTANT
Is Ohm's law? Give correct form of Ohm's law.
EASY
12th CBSE
IMPORTANT
When electrons drift in a metal from lower to higher potential, does it mean that all the free electrons of the metal are moving in the same direction?
EASY
12th CBSE
IMPORTANT
How does the drift velocity of electrons in a metallic conductor vary with the increase in temperature?
EASY
12th CBSE
IMPORTANT
If the temperature of a good conductor increases, how does the relaxation time of electrons in the conductor change?
EASY
12th CBSE
IMPORTANT
A potential difference is applied across a conductor of length . How is the drift velocity affected when is doubled and is halved?
