In the diagram above , the current I is
Question
In the diagram above , the current I is
Options
A) 3/8
B) 9/11
C) 11/9
D) 8/3
Related Lesson: Electric Current | Electric Current, Resistance, and Ohm's Law
The correct answer is B.
Explanation:
| I = | _E |
| R+r |
For parallel of 5Ω and 10Ω
1/R = 1/10 + 1/5 = 1+2/10 = 3/10
∴R = 10/3
Total R = 31/3 + 3 x 1 = 71/2
∴I = 6/71/3 = 6/1 x 3/22 = 18/22 = 9/11
∴I = 9/11
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For parallel of 5Ω and 10Ω
1/R = 1/10 + 1/5 = 1+2/10 = 3/10
∴R = 10/3
Total R = 31/3 + 3 x 1 = 71/2
∴I = 6/71/3 = 6/1 x 3/22 = 18/22 = 9/11
∴I = 9/11