In the circuit shwon in figure, ammeter and voltmeter are ideal. `E = 4 V, R = 15 Omega` and `r = 1 Omega`, then reading of ammter (in `A`) and voltmeter (in V) respectively are:

Options

A. `2 // 3, 11 //3`
B. `2 // 3, 10 //3`
C. `10 // 3, 2 //3`
D. none of these

Answer

B

Explanation

(b) All the three `R` are in parallel
`I = (E)/(r + R//3) = (4)/(1 + 15//3) = (2)/(3) A`
`V = I (R // 3) = (2)/(3) xx (15)/(3) = (10)/(3) V`