A `750 Hz, 20 V` source is connected to as resistance of `100 Omega` an inductance of `0.1803 H` and a capacitance of `10 muF` all in sereis.Calculate the time in which the resistance (thermalcapacity `2J//.^(@)C`) wil get heated by `10^(@)C`.

Options

A. 328 sec
B. 348 sec
C. 3.48 sec
D. 4.32 sec

Answer

2

Explanation

`X_(C ) = (1)/(2pi n c) = 21.2 Omega`
`Z = sqrt(R^(2) + (X_(L) - X_(C ))^(2)) = 835 Omega`
`I_(V) = Ev//z = 0.0239 A`
`I_(V)^(2) Rt = (ms) Delta theta implies t = ((ms)Delta theta)/(I_(V)^(2) R)`