Resistance in series and parallel

hi guys im stuck on working out this total resistance for the circuit im rounding up the resistor values just to one d.p im getting my resistance total for this circuit as 3.5kOhms from this i am then getting a current of approximately 3mA but when i run it through simulator it is showing 2.1mA so im unsure where im going wrong

(edited 7 months ago)

resistance .png92.6KB

Reply 1

Joinedup

20

I get 2.1mA as well

There might be something going wrong with your rounding. I think you should be working to 2 significant figures rather than to 1 dp and you should be rounding to the nearest rather than rounding up all the time.

Reply 2

Jeffers999

OP

6

Original post by Joinedup

I get 2.1mA as well

There might be something going wrong with your rounding. I think you should be working to 2 significant figures rather than to 1 dp and you should be rounding to the nearest rather than rounding up all the time.

im still getting 3mA im really not sure what im doing wrong ive attatched my rough workings if you could please have a look,

379996729_869751328137806_643267187086503015_n.jpg173.3KB

Reply 3

Jeffers999

OP

6

Original post by Joinedup

I get 2.1mA as well

There might be something going wrong with your rounding. I think you should be working to 2 significant figures rather than to 1 dp and you should be rounding to the nearest rather than rounding up all the time.