(a) The factors that affect the strength of electromagnet are number of loops, current, and size of wire.
(b) The effect of current used in LED and filament bulb is heating effect of current.
(c) LEDs are extremely energy efficient and consumes less power than filament bulbs.
Factors that affect the strength of electromagnet
The factors that affect the strength of electromagnet include the following;
- number of loop,
- current,
- size of wire, and
- presence of an iron core
Effect of current used in LED and filament bulb
Heating effect of current is used in LED and filament bulbs. As the current heats up its filament, it leads to the emission of the light due to burning of filament.
Importance of led over filament bulb
LEDs are extremely energy efficient and consumes less power than filament (incandescent) bulbs.
Learn more about filament bulbs here: https://brainly.com/question/1738190
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