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# Lenz's Law Q watch

1. Which of these two is more accurate (would get more marks):

Any current driven by an induced e.m.f. opposes the change causing it. (From NAS Unit 5)

The direction of the induced e.m.f. is such that it will try to oppose the change in flux that is producing it. (From Advanced Physics 4 You)

2. (Original post by mackin boi)
Which of these two is more accurate (would get more marks):

Any current driven by an induced e.m.f. opposes the change causing it. (From NAS Unit 5)

The direction of the induced e.m.f. is such that it will try to oppose the change in flux that is producing it. (From Advanced Physics 4 You)

the question would only be worth one mark because there is only one real point to lenz's law. as long as you get the point across that an induced emf opposes the change that causes it you'll be fine.
3. There are usually 2 mark for this definition.
One mark for saying current(not just induced emf), and 2nd mark for saying in a direction... (to appose the change in phi)
4. (Original post by mackin boi)
Which of these two is more accurate (would get more marks):

Any current driven by an induced e.m.f. opposes the change causing it. (From NAS Unit 5)

The direction of the induced e.m.f. is such that it will try to oppose the change in flux that is producing it. (From Advanced Physics 4 You)

Lenzs law states that the the emf induced in a coil is such to oppose the change causing it.

think of it in terms of Conservation of energy principle Thats how i remember it
5. (Original post by El Chueco)
the question would only be worth one mark because there is only one real point to lenz's law. as long as you get the point across that an induced emf opposes the change that causes it you'll be fine.
its two marks in edexcel - i've seen it on a past paper
6. (Original post by Phil23)
its two marks in edexcel - i've seen it on a past paper
What paper was it phil?
7. (Original post by mackin boi)
Which of these two is more accurate (would get more marks):

Any current driven by an induced e.m.f. opposes the change causing it. (From NAS Unit 5)

The direction of the induced e.m.f. is such that it will try to oppose the change in flux that is producing it. (From Advanced Physics 4 You)

So i shud say:

The direction of the current is such that it will try to oppose the change in flux that is producing it. a sort of mix of the 2....
8. (Original post by mackin boi)
So i shud say:

The direction of the current is such that it will try to oppose the change in flux that is producing it. a sort of mix of the 2....
ok.. for you edexcel boyos

the direction of the current of an induced emf opposes the change in flux that causes the induction.
9. 1 mark for direction of induced emf/current
1 mark for opposes the change causing it

this was a question we did on da last day at coll
10. The direction of the induced e.m.f. is such that it will try to oppose the change in flux that is producing it. (From Advanced Physics 4 You)

This statement will get you full marks

The other statement will be pushing to get you full marks, if you have a dodgy examiner, you will only get half marks.

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