An algorithm is designed to monitor a battery management system for an autonomous drone.
Figure 1 shows the pseudocode for this system.
1 voltage ← READ_VOLTAGE()
2 charge_state ← "DISCHARGING"
3 WHILE voltage < 12.6 DO
4 IF voltage < 10.5 THEN
5 charge_state ← "CRITICAL"
6 TRIGGER_ALARM()
7 ELSE
8 charge_state ← "LOW"
9 ENDIF
10 voltage ← READ_VOLTAGE()
11 ENDWHILE
Identify the line number where selection is first used in the algorithm shown in Figure 1.
Line 2
Line 3
Line 4
Line 10
Practise AQA GCSE Computer Science Programming concepts with exam-style questions for GCSE Computer Science. 100 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.