Physics 10th ICSE: Current Electricity [Semester 2] Flashcards
1
Q
What is the S.I unit of charge
A
coulomb
Symbol: C
2
Q
What is current? State its S.I unit
A
Current is the flow of charge.
Its S.I unit is ampere | Symbol: A
3
Q
State the 2 types of charge
A
Positive and negative charge
The body losing electrons becomes positively charged
The body gaining electrons becomes negatively charged.
4
Q
How do the 2 charges react to each other
A
Like charges repel and unlike charges attract
5
Q
Define potential at a point
A
The amount of work done per unit charge in bringing a positive test charge from infinity to that point
6
Q
What is the unit of electric potential?
A
V (potential) = W (work)/Q (charge)
ie. V=W/Q
therefore,
1 volt = 1 joule / 1 coulomb = 1 J C^-1
7
Q
What is Potential Difference between 2 points?
A
Potential Difference difference between 2 point
