ITPEC IP October 2023 Question 16
ITPEC IP October 2023 — Question 16 of 100
A capacity of 100 mAh means the battery can theoretically supply 100 mA for one hour. Ampere-hours express electric charge as current multiplied by time: 100 mA × 1 h = 100 mAh. Equivalent ideal combinations include 50 mA for two hours or 200 mA for half an hour, though actual usable capacity varies with operating conditions.
Answer (a)
Why not others:
- (b) and (d) confuse battery capacity with charging duration
- (c) 1 A × 100 minutes equals about 1,667 mAh, far greater than 100 mAh
Key rule: Battery capacity in mAh is current in milliamperes multiplied by discharge time in hours; it does not directly state charging time.
AI-generated — may contain errors
The original exam layout is preserved in the image so diagrams, formulas, tables, and code remain accurate.
This question comes from an official ITPEC past paper. ITPEC Practice is an independent study tool and is not affiliated with ITPEC. See the official IP past-paper collection or Report an issue.