A battery of emf `E` and internal resistance `r` is connected is to external resistance `B` The maximum point is the external circuit is `9W` The current flowing in the circuit under the condition is `3A` What is the value of `E` in volt ?

A battery of emf E and internal resistance 'r' is connected to an external resistance 'R', the condition for maximum power transfer is

An element with emf epsilon and interval resistance r is connected across an external resistance R . The maximum power in external circuit is 9 W . The current flowing through the circuit in these conditions is 3 A . Then which of the following is // are correct ?

An element with emf epsilon and interval resistance r is connected across an external resistance R . The maximum power in external circuit is 9 W . The current flowing through the circuit in these conditions is 3 A . Then which of the following is // are correct ?

An external resistance R is connected to a cell of internal resistance r . The current in the circuit is maximum when :

An external resistance R is connected to a cell of internal resistance r. The current in the circuit is maximum when

An external resistance R is connected to a cell of internal resistance r. The current in the circuit is maximum when :

An total resistance R is connected to a cell of internal resistance r the maximum current flows in the external resistance, when

Four cells, each of emf E and internal resistance r, are connected in series across an external resistance reverse. Then, the current in the external circuit is

A cell of emf E and internal resistance ® is connected across an external resistance, R. The cell shall drive maximum current through the external resistance R only if