I motsetning til vekselstrøm bruker hurtiglading likestrøm.

I motsetning til means in contrast to, as opposed to, or unlike.

It is a fixed expression:

• i = in
• motsetning = contrast/opposition
• til = to

So I motsetning til vekselstrøm means Unlike alternating current or In contrast to alternating current.

It is commonly used to compare two things:

• I motsetning til bensinbiler bruker elbiler strøm.
• I motsetning til sommeren er vinteren kald.

Norwegian often puts a comparison or other context first in the sentence. Here, the speaker wants to frame the statement by first mentioning what fast charging is being contrasted with.

So the structure is:

• I motsetning til vekselstrøm = opening contrast phrase
• bruker = verb
• hurtiglading = subject
• likestrøm = object

Starting with that phrase is very natural in Norwegian and gives emphasis to the contrast.

This is because of the V2 rule in Norwegian. In main clauses, the finite verb usually comes in the second position.

If the sentence started with the subject, it would be:

• Hurtiglading bruker likestrøm.

But when another element is placed first, such as I motsetning til vekselstrøm, the verb still stays in second position:

• I motsetning til vekselstrøm bruker hurtiglading likestrøm.

So this is normal word order in Norwegian, not an inversion for a question.

The subject is hurtiglading.

You can tell because it is the thing doing the action of bruker (uses).

So:

• hurtiglading = subject
• bruker = verb
• likestrøm = object

Even though hurtiglading comes after the verb here, it is still the subject because the first phrase takes up the first position in the sentence.

Because Norwegian very often forms compound nouns as single words.

These are all compounds:

• vekselstrøm = veksel
  • strøm = alternating current
• hurtiglading = hurtig
  • lading = fast charging
• likestrøm = like
  • strøm = direct current

English often writes similar ideas as two words, but Norwegian usually joins them into one word. This is very important, because writing them separately can look wrong or change the meaning.

Because the sentence is talking about these things in a general, technical sense, not about one specific item.

In Norwegian, as in English, you often leave out the article when speaking generally about uncountable or abstract technical concepts:

• vekselstrøm = alternating current
• likestrøm = direct current
• hurtiglading = fast charging

Compare:

• Hurtiglading bruker likestrøm. = Fast charging uses direct current.
• Den hurtigladingen bruker likestrøm. = That fast-charging system uses direct current.

The first is general; the second is specific.

In this expression, til is the normal and expected preposition.

So you should learn the whole phrase as:

• i motsetning til

Not:

• i motsetning med
• i motsetning av

Those would sound wrong or unnatural here.

This is one of those combinations that is best memorized as a fixed expression.

Yes. Bruker is the present tense of å bruke, which means to use.

Here it means:

• hurtiglading bruker likestrøm = fast charging uses direct current

Some basic forms:

• å bruke = to use
• bruker = use/uses
• brukte = used
• har brukt = have/has used

In technical writing, bruke is very common for describing what a system, machine, or method uses.

Not with the same meaning.

If you move i motsetning til vekselstrøm to the end, it may sound unclear or awkward, because that phrase is meant to compare hurtiglading with vekselstrøm as a whole contrast frame.

The original sentence:

• I motsetning til vekselstrøm bruker hurtiglading likestrøm.

clearly means:

• Unlike alternating current, fast charging uses direct current.

If you want a more straightforward version, you could say:

• Hurtiglading bruker likestrøm, ikke vekselstrøm.
• Hurtiglading bruker likestrøm i stedet for vekselstrøm.

Those are slightly different in tone, but very natural.

Grammatically, vekselstrøm is inside the phrase i motsetning til vekselstrøm, and the sentence is setting up a contrast between vekselstrøm and what follows in the main clause.

In meaning, the contrast is really about the kind of current involved:

• vekselstrøm = alternating current
• likestrøm = direct current

But the sentence is phrased as:

• In contrast to alternating current, fast charging uses direct current

So the comparison is expressed through the whole sentence, not as a simple word-for-word pair.

Norwegian often prefers an active structure when describing how something works.

So:

• Hurtiglading bruker likestrøm. = Fast charging uses direct current.

A passive version would also be possible in some contexts, for example:

• Ved hurtiglading brukes likestrøm. = In fast charging, direct current is used.

The active version is simple, direct, and very common in explanatory or technical language.

All three are generally treated as masculine nouns:

• en vekselstrøm
• en hurtiglading
• en likestrøm

But in this sentence, gender does not show up because there is no article or adjective.

If you wanted the definite forms, they would normally be:

• vekselstrømmen
• hurtigladingen
• likestrømmen

Yes, very much so.

It has several features that are common in technical or factual Norwegian:

• a contrast phrase at the beginning: I motsetning til ...
• a present-tense verb for general facts: bruker
• compact compound nouns: hurtiglading, vekselstrøm, likestrøm
• no unnecessary articles

So this sentence sounds natural and typical for explanatory writing about technology.