CAIE IGCSE Physics 4.2.2.5 Electric Current As Charge Passing a Questions
Learn to rearrange I = Q/t, convert units consistently and connect charge flow with current and time in calculation questions.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- Calculate charge, current or time using I = Q/t with consistent units, convert milliseconds, nanoseconds or milliamperes before substitution, and link charge flow or electron number to total charge before finding current.
CAIE IGCSE Physics 4.2.2.5 Electric Current As Charge Passing a Questions question 1
Fig. 7.1 shows two charged metal plates. X marks the position of the centre of the space between the plates.
Fig. 7.1
During a thunderstorm, an electric field is set up between a cloud and the ground. Charges on the cloud and on the ground are shown in Fig. 7.2.
Fig. 7.2
The lightning shown in Fig. 7.2 discharges a current of 28000 A for 0.0012 s .
Calculate the charge that flows from the cloud to the ground.
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