in the effective resistance of three resistors 3ohms,5ohms,and R ohms connected in series is 14ohms the value of R is
Answers
Answered by
2
Answer:
Given: A resistance of 3Ω is connected in series with another resistance of 5Ω. A potential difference of 6V is applied across the combination.
To find the current through the circuit and potential difference across the 3Ω resistance.
Solution:
as the resistance are connected in series
so R=R
1
+R
2
=3+5=8Ω
now according to Ohm's law,
R=IR
⟹I=
R
V
⟹I=
8
6
⟹I=0.75A
So, 0.75A of current flow through circuit.
Now , Potential Difference across the 3Ω resistance is
V
1
=IR
1
⟹V
1
=0.75×3
⟹V
1
=2.25V
Now the corresponding current will be,
I
1
=
R
1
V
1
⟹I
1
=
3
2.25
⟹I
1
=0.75A=I
Similar questions