What do u think would happen if a car had all its electrical components (such as windscreens wipers, headlights, blinkers,
internal light, radio) wired up in series, not parallel?
Can someone help me with 15 and 16 pls

If they are connected in series they will share the same current.

Explanation:

The circuits connected in series, share the same current and for each element passes current that flows from one element to another, so when one of these elements is damaged or removed from the circuit the current of the whole circuit is interrupted and no element will work. The attached image shows a circuit connected in series and can be analyzed that the same current flows through each element.

i wanna say it’s between b and d, leaning more towards b.