Increasing the electric current through a conductor causes it to become?

[a1pacino]

Increasing the electric current through a conductor causes it to become

a heated

b cooled

c corroded

d demagnetised

had this question in college my tutor said answer is heated but online answer is demagnetised? :|

 

[Apache]

It's heated!

More current through same wire - what happens?

 

[Robojin]

My instinctive answer was 'heated'

 

[M107]

A fire hazard.

 

[ian932]

It's heated!More current through same wire - what happens?

The vet is correct Applaud SmileyApplaud SmileyApplaud Smiley

What online material said demagnetised? 1st I've heard about copper being a ferromagnet, also would it not be classed as Degaussing now I

 

[a1]

Heat - is it.

 

[ianmacd]

Heat - is it.

Was that supposed to be "it is"?

 

[a1]

Was that supposed to be "it is"?

Yes. :_|

:coat

 

[Andy™]

Increasing the electric current through a conductor causes it to becomea heated

b cooled

c corroded

d demagnetised

had this question in college my tutor said answer is heated but online answer is demagnetised? :|

this is why we need to de-rate cables that go through insulation etc, and need to protect them from overload so they dont get too hot

 

[a1pacino]

its on an exam paper i found online a while back!

 

[SPECIAL LOCATION]

its on an exam paper i found online a while back!

From what I can remember almost ever sample paper I ever had always seemed to have at least one question with the wrong answer on it!

In fact one of our proper exams had a wrong answer..

so they had to adjust everyones marks accordingly! :|

This is where a bit of common sense has to come in..

stick to basics of what you have learnt

 

[Andy™]

and on mock exams given by college, often a lot more than 1 wrong answer. and some dont even have the answer as an option

 

[a1pacino]

yeh its true,im going through the questions that im not 100% about and some of them are a nightmare!