Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Physics
Physics
Problem
Resistors of
5
Ω
5\,\Omega
5
Ω
,
10
Ω
10\,\Omega
10
Ω
and an unknown resistance
R
R
R
are connected in parallel to a
20
V
20\,\text{V}
20
V
source. The total current supplied by the source is
10
A
10\,\text{A}
10
A
. What is the value of the unknown resistance
R
R
R
? a)
6
Ω
6\,\Omega
6
Ω
b)
2
Ω
2\,\Omega
2
Ω
c)
2.5
Ω
2.5\,\Omega
2.5
Ω
d)
5
Ω
5\,\Omega
5
Ω
Browse the problem library