Notifications
Clear all
Electricity
1
Posts
2
Users
0
Likes
178
Views
0
15/07/2021 3:22 pm
Topic starter
(a) Define the unit of resistance (or Define the unit “ohm”).
(b) What happens to the resistance as the conductor is made thinner?
(c) Keeping the potential difference constant, the resistance of a circuit is doubled. By how much does the current change?
1 Answer
0
15/07/2021 3:24 pm
(a) 1 ohm is the resistance of a conductor such that when a potential difference of 1 volt is applied to its ends, a current of 1ampere flows through it.
(b) Its resistance will increase.
(c) V = IR
I = V/R
Keeping V constant, I ∝ 1/R
So, when R is doubled, I becomes half.