List of top Physics Questions on Electric Power asked in NEET (UG)

Power dissipated in an $LCR$ series circuit connected to an a.c. source of emf $\varepsilon$ is :

Two identical batteries each of e.m.f 2 V and internal resistance $1\, \Omega$ are available to produce heat in an external resitance by passing a current through it. The maximum power that can be developed across R using these batteries is