1.

Maximum power in a 0.5Omega resistance connected with two batteries of 2V emf and 1Omega internal resistance in parallel, is ........ .

Answer»

`(8)/(9) ` W
1.28 W
2.0 W
3.2 W

Solution :2.0 W
Equivalent resistance of internal resistance
`r. = (1 xx 1)/(1 + 1) = (1)/(2) = 0.5 OMEGA`
TOTAL resistance of circuit = 0.5 + 0.5 = ` 1.0 Omega`

`therefore` Current flowing through the circuit
`I = (E)/(R) = (2)/(1) = 2 `A
`therefore ` As 2A current is flowing through the 0.5`Omega` resistor, so P `= I^(2) R = 4 x 0.5 = 2.0 ` W


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