The diagram above shows three resistors connected across a cell of e.m.f. 1.8 V and internal resistance r. Calculate :
The internal resistance r.

The diagram above shows three resistors connected across a cell of e.m.f. 1.8 V and internal resistance r. Calculate : Current through 3Omega resistor.

The diagram below in Fig. shows the arrangement of five different resistances connected to a battery of e.m.f. 1.8 V. Calculate : the total resistance of the circuit,

The maximum power dissipated in an external resistance R, when connected to a cell of emf E and internal resistance r, will be

A resistance of 4 Omega and a wire of length 5 meters and resistance 5 Omega are joined in series and connected to a cell of e.m.f. 10 V and internal resistance 1 Omega . A parallel combination of two identical cells is balanced across 300 cm of wire. The e.m.f. E of each cell is

The circuit diagram in Fig. shows three resistors 2 Omega , 4 Omega and R Omega connected to a battery of e.m.f. 2 V and internal resistance 3 Omega . If current of 0.25 A flows through the circuit, find : the p.d. across the internal resistance of the cell,

The circuit diagram in Fig. shows three resistors 2 Omega , 4 Omega and R Omega connected to a battery of e.m.f. 2 V and internal resistance 3 Omega . If current of 0.25 A flows through the circuit, find : the p.d. across the R Omega or 2 Omega resistor,

The circuit diagram in Fig. shows three resistors 2 Omega , 4 Omega and R Omega connected to a battery of e.m.f. 2 V and internal resistance 3 Omega . If current of 0.25 A flows through the circuit, find : the p.d. across the 4 Omega resistor,

The circuit diagram in Fig. shows three resistors 2 Omega , 4 Omega and R Omega connected to a battery of e.m.f. 2 V and internal resistance 3 Omega . If current of 0.25 A flows through the circuit, find : the value of R.

The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal resistance r = 1 ohm connected to an external resistance R = 4 ohm. The ammeter A measures the current in the circuit and the voltmeter V measures the terminal voltage across the cell. What will be the readings of the ammeter and voltmeter when the key K is open

The diagram in Fig. shows a cell of e.m.f. epsi = 2 volt and internal resistance r = 1 ohm connected to an external resistance R = 4 ohm. The ammeter A measures the current in the circuit and the voltmeter V measures the terminal voltage across the cell. What will be the readings of the ammeter and voltmeter when the key K is closed.