CAIE IGCSE Physics EXTENDED 4.2.3.7 P.d.: V = W/Q
CAIE IGCSE Physics EXTENDED 4.2.3.7 P.d.: V = W/Q
Practise using V = W/Q to connect potential difference with charge flow and energy transfer in resistors, mains supplies and lightning contexts.
How this is tested
- calculate p.d. or energy transferred using V = W/Q for a resistor or lightning flash
- recognise the volt as J/C when interpreting units or choosing an equivalent quantity
- use Q = It with V = W/Q when current, time and energy are supplied