Two batteries of `E_(1)` internal resistance `r_(1)` & emf `E_(2)` internal resistance `r_(2)` are connected in parallel and makes a battery system. An external resistance R is connected across this system as shown in the figure.

Two batteris of emf epsilon_(1) and epsilon_(2) wit respective internal resistance r_(1) and r_(2) are connected in parallel. Now

Two batteries of e.m.f. E_(1) and E_(2) and internal resistance r_(1) and r_(2) are connected in parallel. Determine their equivelent e.m.f.

Two batteries of e.m.f. E_(1) and E_(2) and internal resistance r_(1) and r_(2) are connected in parallel. Determine their equivelent e.m.f.

Two batteries of e.m.f. E_(1) and E_(2) and internal resistance r_(1) and r_(2) are connected in parallel. Determine their equivelent e.m.f.

N batteries each of emf E and internal resistance r are first connected in series and then in parallel to an external resistance R. if current through R is same in both cases then.

N batteries each of emf E and internal resistance r are first connected in series and then in parallel to an external resistance R. if current through R is same in both cases then.

A solenoid of inductance L with resistance r is connected in parallel to a resistance R . A battery of emf E and of negligible internal resistance is connected across the parallel combination as shown in the figure. At time t = 0 , switch S is opened, calculate (a) current through the solenoid after the switch is opened. (b) amount of heat generated in the solenoid.

A solenoid of inductance L with resistance r is connected in parallel to a resistance R . A battery of emf E and of negligible internal resistance is connected across the parallel combination as shown in the figure. At time t = 0 , switch S is opened, calculate (a) current through the solenoid after the switch is opened. (b) amount of heat generated in the solenoid.

Two identical cells each of emf E and internal resistance r are connected in parallel with an external resistance R. To get maximum power developed across R, the value of R is