35. In the following circuit find current delivered by 10 V battery
20
20 V
10 V
(1) 3 A
(3) 1A
(2) 2A
(4) Zero
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Given : A circuit having two voltage source 10V & 20V and three resistance of 2 ohm each
To find : current delivered by 10 V battery
Solution:
Let say current from I0 V is I₁ &
Current from 20V is I₂
10 = 2I₁ + 2( I₁ + I₂)
=> 5 = I₁ + I₁ + I₂
=> 5 = 2I₁ + I₂
20 = 2I₂ + 2I₂ ( current entering and exiting at any point are equal )
=> 20 = 4I₂
=> I₂ = 5
5 = 2I₁ + I₂
=> 5 = 2I₁ + 5
=> 2I₁ = 0
=> I₁ = 0
current delivered by 10 V battery is Zero
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