JAMB - Physics (2000 - No. 45)
In the diagram above, the values of V1 and V2 are respectively
1V and 1/3V
1/3V and 1V
1/3V and 2/3V
1V and 2/3V
説明
Effective resistance in the circuit
= 3 + 2 + 1 = 6Ω
Current through the I = \(\frac{E}{(R+r)}\)
∴ I = \(\frac{2}{6}\)
=> V1 = I x R1 = \(\frac{2}{6}\times\frac{3}{1}\) = 1V
= V2 = I x R2 = \(\frac{2}{6}\times\frac{2}{1}\) = \(\frac{2}{3}\)V
∴ we have 1V and \(\frac{2}{3}\)V
= 3 + 2 + 1 = 6Ω
Current through the I = \(\frac{E}{(R+r)}\)
∴ I = \(\frac{2}{6}\)
=> V1 = I x R1 = \(\frac{2}{6}\times\frac{3}{1}\) = 1V
= V2 = I x R2 = \(\frac{2}{6}\times\frac{2}{1}\) = \(\frac{2}{3}\)V
∴ we have 1V and \(\frac{2}{3}\)V