Consider the following electric circuit :. Calculate the values of the following : (a) The total resistance…
Consider the following electric circuit :. Calculate the values of the following : (a) The total resistance of the circuit (b) The total current drawn from the source (c) Potential difference across the parallel combination of 10 Ω and 15 Ω resistors
Solution
(a)
1 1
= + = R1 = 6
𝑅1 10 𝛺 15 𝛺 6𝛺
1 1
= + = R2 = 24
𝑅2 60 𝛺 40 𝛺 2400 𝛺
∵ R1 and R2 are in series
Rtotal = R1 + R2 = (6 + 24) = 30
𝑉 15 𝑉
(b) V = IR I= = = 0·5 A
𝑅 30 𝛺
(c) V = IR1 = 0·5 A 6 = 3·0 V
