[" Example "80." A generator develops an emf of "120V" and has "],[" a terminal potential difference of "115V" ,when the armature "],[" current is "25A" What is the resistance of the armature? "]

A generator develops an e.m.f. of 120 V and has a terminal potential difference of 115 V, when the amature current is 25 A. What is the resistance of the armature ?

The terminal potential difference for a cell is 8.5 V when current is 2A and 9 V when current is 1.5A. What is the internal resistance of cell ?

The variation of terminal potential difference (V) with current flowing through a cell is as shown The emf and internal resistance of the cell are

Potential difference between the two brushes of generator is found to be 200 V when current of 5 A is being delivered by it. When current delivered by the same generator is 10 A, then potentail difference between the brushes of generator becomes 180 V. What is the induced emf and resistance of armature coil ?

A cell has emf of 2.2 V, when connected to a resistance of 5 Omega , the potential difference between the terminals of the cell becomes 2.1 V, the internal resistance for the cell is

The rms values of the terminal potential differences of R ,L and C of a series circuit are 80V ,70V and 10V respectively.What is the rms value of the applied emf in the circuit?