Advertisements
Advertisements
Question
How is the electric potential difference between the two points defined? State its S.I. unit.
Advertisements
Solution
The potential difference between two points is equal to the work done in moving a unit positive charge from one point to the other.
It's S.I. unit is Volt.
APPEARS IN
RELATED QUESTIONS
State whether the resistivity of a wire changes with the change in the thickness of the wire.
What is the unit of electric charge?
Potential difference is measured in _________ by using a ___________ placed in ___________ across a component.
Keeping the resistance constant, the potential difference applied across the ends of a component is halved. By how much does the current change?
A current of 0.2 A flows through a wire whose ends are at a potential difference of 15 V. Calculate:
(i) The resistance of the wire, and
(ii) The heat energy produced in 1 minute.
Define the following:
Potential difference
Potential near a charge is the measure of its ______ to bring a positive charge at that point.
A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is:
A current of 1 ampere flows in a series circuit containing an electric lamp and a conductor of 5 Ω when connected to a 10 V battery. Calculate the resistance of the electric lamp.
Now if a resistance of 10 Ω is connected in parallel with this series combination, what change (if any) in current flowing through 5 Ω conductor and potential difference across the lamp will take place? Give reason.
______ is work done per unit charge.
