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Byju's Answer
Standard X
Physics
Combination of Resistances
Three resisto...
Question
Three resistors
R
1
=
3
Ω
,
R
2
=
4
Ω
and
R
3
=
5
Ω
are connected as shown in figure. Find the equuivalent resistance of following circuit.
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Solution
Given,
R
1
=
3
Ω
R
2
=
4
Ω
R
3
=
5
Ω
On series, the equivalent resistance between and y is
R
1
+
R
2
=
3
+
4
R
e
q
=
7
Ω
In parallel the equivalent resistance is
1
R
e
q
=
1
R
1
+
1
R
2
+
1
R
3
1
R
e
q
=
1
3
+
1
4
+
1
5
1
R
e
q
=
60
47
Ω
1
R
e
q
=
1.276
So the overall resistance of the circuit
R
e
q
=
R
s
e
q
+
R
p
e
q
R
e
q
=
7
+
1.276
R
e
q
=
8.276
Ω
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In the circuit diagram given below, three resistors R
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, R
2
, and R
3
of 5 Ω, 10 Ω and 30 Ω, respectively are connected as shown
Calculate:
(a) current through each resistor.
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(c) total resistance in the circuit.