P4.3 IV Graphs Flashcards
1
Q
What is the electric Current?
A
Rate of flow of charge.
2
Q
What units are charge, current and time measured in?
A
Coulomb (C), Ampere (A), Second (S).
3
Q
What is the same at all points when charge flows in a closed loop?
A
Current.
4
Q
What must there be in a closed circuit so that electrical charge can flow?
A
Source of potential difference.
5
Q
Which two factors does current depend on and what are their units?
A
Resistance Unit: Ohm (O), Unit: Volt (V).
6
Q
What happens to the current if the resistance is increased but the p.d. stays the same?
A
Current Decreases.
