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 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 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 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 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.

(a) Three resistors 2 Omega, 4 Omega and 5 Omega are combined in parallel. What is the total resistance of the combination ? (b) If the combination is connected to a battery of emf 20 V and negligible internal resistance, determine the current through each resistor, and the total current drawn from the battery.

Three resistors of resistances 3Omega, 4Omega and 5Omega are combined in parallel. This combination is connected to a battery of emf 12V and negligible internal resistance, current through each resistor in ampere is

The wire of potentiometer has resistance 4 Omega and length 1m. It is connected to a cell of e.m.f. 2V and internal resistance 1 Omega . The current flowing through the potentiometer wire is

Three resistors are connected to a 6 V battery as shown in the figure given below : Calculate : potential difference across the 7.2Omega resistor.

Fig. shows two resistors A of 4 Omega and B of 6 Omega joined in series to a battery of e.m.f. 12 V and internal resistance 2 Omega . Calculate : the p.d. across the resistor B,