Back
to top
Current and electricity
Watch
Announcements
Page 1 of 1
Go to first unread
Skip to page:
0
reply
Report
#2
(Original post by dantitch)
How does the current know which way to split at a junction in a circuit?
Posted from TSR Mobile
How does the current know which way to split at a junction in a circuit?
Posted from TSR Mobile
current is a rate of flow (of charged particles)
voltage is a force
R=V/I
which means resistance of a component is the amount of volts required to force a particular rate of flow through it.
parallel components have the same voltage across them.
so if you had a 10ohm and 20ohm resistors in parallel, the current forced through the 10ohm ohm would be twice the current forced through the 20 ohm
0
reply
Report
#3
(Original post by Joinedup)
parallel components have the same voltage across them.
so if you had a 10ohm and 20ohm resistors in parallel, the current forced through the 10ohm ohm would be twice the current forced through the 20 ohm
parallel components have the same voltage across them.
so if you had a 10ohm and 20ohm resistors in parallel, the current forced through the 10ohm ohm would be twice the current forced through the 20 ohm
0
reply
Report
#4
(Original post by Desk-Lamp)
Ah yes, but how does the current know? Do the electrons use telepathy to detect which path has more resistance before deciding which path to take?
Ah yes, but how does the current know? Do the electrons use telepathy to detect which path has more resistance before deciding which path to take?
electrons can only turn into a branch at the same rate the electrons already in the branch are getting out of the other end.
sort o
0
reply
(Original post by Joinedup)
right, for metal wires and similar you can perhaps think of it as being ram packed with electrons. Perhaps like a pipe full of snooker balls, they can only shuffle forward when there's a space in front of them.
electrons can only turn into a branch at the same rate the electrons already in the branch are getting out of the other end.
sort o
right, for metal wires and similar you can perhaps think of it as being ram packed with electrons. Perhaps like a pipe full of snooker balls, they can only shuffle forward when there's a space in front of them.
electrons can only turn into a branch at the same rate the electrons already in the branch are getting out of the other end.
sort o
0
reply
X
Page 1 of 1
Go to first unread
Skip to page:
Quick Reply
Today on TSR
-
Have your say on 2021 assessmentOfqual and DfE want students' thoughts
- Applying to uni? Chat to others here
- Struggling with lockdown uni work
- Win a year of Headspace
- Housemate's BF just wont leave