#1
Determine the resistance, R and series inductance L (or capacitance C) for each of the following impedances assuming the frequency is 50Hz.

i - (6 + j9) Ω
ii - (7 - j8) Ω
iii - j15Ω
0
3 years ago
#2
(Original post by Randall9618)
Determine the resistance, R and series inductance L (or capacitance C) for each of the following impedances assuming the frequency is 50Hz.

i - (6 + j9) Ω
ii - (7 - j8) Ω
iii - j15Ω
Not sure this is in the right forum for this question... it looks it has some uncommon terminology, specific to a different subject.
0
3 years ago
#3
(Original post by RDKGames)
Not sure this is in the right forum for this question... it looks it has some uncommon terminology, specific to a different subject.
Yeah, it's physics/electronics (+outside of my knowledge base - I just know enough to say that...)
0
3 years ago
#4
(Original post by DFranklin)
Yeah, it's physics/electronics (+outside of my knowledge base - I just know enough to say that...)
I suppose moving it to Physics would be better than leaving it here then.
0
#5
(Original post by RDKGames)
I suppose moving it to Physics would be better than leaving it here then.

Sorry guys. Well spotted
0
3 years ago
#6
The real part is the resistance and the imaginary part is the reactance
so for (6+j9) the resistance is 6 ohms and the reactance is 9 ohms inductive reactance XL (+ve j means inductance)
and for (7-j8) the resistance is 7 ohms and the reactance is 8 ohms capacitive reactance XC (-ve j means capacitive)

the formula for inductive reactance is XL = 2πfL
the formula for capacitive reactance is XC = 1/(2πfC)

so you need to rearrange those to make C or L the subject and sub in the given frequency of 50Hz
1
3 years ago
#7
I change the title a bit so that it looks more like a physics thread.
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### Poll

Join the discussion

#### How did your AQA GCSE English Language Paper 1 go?

Loved the paper - Feeling positive (77)
18.73%
The paper was reasonable (153)
37.23%
Not feeling great about that exam... (117)
28.47%
It was TERRIBLE (64)
15.57%