A resistor of resistance R is connected to a cell internal resistance `5 Omega`. The value of R is varied from ` 1 Omega` to `5 Omega`. The power consumed by R

Statement I: When an external resistor of resistance R (connected across a cell to internal resistance r ) is varied, power consumed by resistance R is maximum when R = r. Statement II: Power consumed by a resistor of constant resistance R is maximum when current through it is maximum.

Statement I: When an external resistor of resistance R (connected across a cell to internal resistance r ) is varied, power consumed by resistance R is maximum when R = r. Statement II: Power consumed by a resistor of constant resistance R is maximum when current through it is maximum.

A resistance R whose value is varied from 1 Omega to 5 Omega is connected to a cell of internal resistance 3 Omega . The power consumed by R.

A resistance R whose value is varied from 1 Omega to 5 Omega is connected to a cell of internal resistance 3 Omega . The power consumed by R.

A battery of internal resistance 2 Omega is connected ot a variable resistor whose value can vary from 4 Omega to 10 Omega . The resistance is initially set at 4 Omega . If the resistance is now increased then

When two resistors of resistances R_1 and R_2 are connected in parallel, the net resistance is 3 Omega . When connected in series, its value is 16 Omega . Calculate the values of R_1 and R_2 .

A cell of e.m.f. 2 V and internal resistance 1.2 Omega is connected to an ammeter of resistance 0.8 Omega and two resistors of 4.5 Omega and 9 Omega as shown in Fig. find : the potential difference across the 4.5 Omega resistor.

A battery of emf 3V and internal resistance r is connected in series with a resistor of 55 Omega through an ammeter of resistance 1 Omega . The ammeter reads 50 mA. Draw the circuit diagram and calculate the value of r.

A battery of emf 3 volt and internal resistance r is connected in series with a resistor of 55 Omega through an ammeter of resistance 1 Omega . The ammeter reads 50 mA. Draw the circuit diagram and calculate the value of r.