Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Which of the following correctly gives the equivalent resistance
R
eq
R_{\text{eq}}
R
eq
of three resistors
R
1
,
R
2
,
R
3
R_1,\,R_2,\,R_3
R
1
,
R
2
,
R
3
connected in parallel? a)
R
eq
=
R
1
+
R
2
+
R
3
R_{\text{eq}} = R_1 + R_2 + R_3
R
eq
=
R
1
+
R
2
+
R
3
b)
R
eq
=
R
1
R
2
R
3
R
1
+
R
2
+
R
3
R_{\text{eq}} = \dfrac{R_1 R_2 R_3}{R_1 + R_2 + R_3}
R
eq
=
R
1
+
R
2
+
R
3
R
1
R
2
R
3
c)
1
R
eq
=
1
R
1
+
1
R
2
+
1
R
3
\dfrac{1}{R_{\text{eq}}} = \dfrac{1}{R_1} + \dfrac{1}{R_2} + \dfrac{1}{R_3}
R
eq
1
=
R
1
1
+
R
2
1
+
R
3
1
d)
1
R
eq
=
R
1
+
R
2
+
R
3
\dfrac{1}{R_{\text{eq}}} = R_1 + R_2 + R_3
R
eq
1
=
R
1
+
R
2
+
R
3
Browse the problem library