Physics Topic 2- Electricity Flashcards
1
Q
What must happen for electrical charge to flow?
A
The circuit must include a source of potential difference
2
Q
In a series circuit, the current has..
A
The same value anywhere in the loop
3
Q
How does resistance affect current?
A
The greater the resistance, the smaller the current
4
Q
Resistance in Ohmic Conductors
A
Is constant. At a constant temperature, the resistance is directly proportional to Potential difference
5
Q
Resistance in lamps
A
Charge flows through bulb and temperature increases. Resistance increases with temperature. Bendy line
6
Q
Resistance in diodes
A
Current only flows in one direction. Very high resistance in opposite direction
7
Q
A
