IOM 2020, Блиц — Задача 40

The Blitz-contest of IOM-2020

Условие

A light bulb is connected to an ACAC power source with thick wires, as shown in the picture. What effect can you see after a piece of iron has been put into the wire coil?

Drawing: a light bulb connected by thick wires in series with a wire coil to a box labelled AC; a grey cylinder labelled 'Iron' to the right of the coil, with a red arrow pointing towards the coil.
  • The light bulb shines brighter
  • The light bulb shines darker
  • Nothing changes

Отговори

Решение

Внимание: Непълно решение

The source contains only the answer key, no worked solution.

Оригинал в Архива: iom-2020-blitz-tasks.pdf · официални решения: iom-2020-blitz-answers.pdf