Two batteries of different emfs and different internal resistances are connected as shown. The voltage across AB in volts is.
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Two batteries of difference emf's and internal resistance are connected in parallel to one another.

Two batteries of different emf and internal resistances connected in series with each other and with an external load resistor. The current reversed, the current becomes 1.0 A. the ratio of the emf of the two batteries is

3.0 A current passing through Two batteries of different emf and internal resistances connected in series with each other and with an external load resistor. The current reversed, the current becomes 1.0 A. the ratio of the emf of the two batteries is

Two identical batteries, each having emf of 1.8 V and of equal internal resistances are connected as shown in the figure. Potential difference between A and B will be equal to (Ignore the resistance of lead wires)

Two identical batteries, each having emf of 1.8 V and of equal internal resistances are connected as shown in the figure. Potential difference between A and B will be equal to (Ignore the resistance of lead wires)

Two batteries, one of emf 18 volts and internal resistance 2 Omega and the other fo emf 12 volts and internal resistance 1 Omega , are connected as shown. The voltmeter V will record a reading of

The series combination of two batteries both of the same emf 10 V, but different internal resistance of 20 Omega and 5Omega is connected to the parallel combination of two resistors 30Omega and R Omega . The voltage difference across the battery of internal resistance 20 Omega is zero, the value of R(in Omega ) is __________.

The series combination of two batteries both of the same emf 10 V, but different internal resistance of 20 Omega and 5Omega is connected to the parallel combination of two resistors 30Omega and R Omega . The voltage difference across the battery of internal resistance 20 Omega is zero, the value of R(in Omega ) is __________.