# Two bulbs are rat

Concepts/Formulas Used:

Resistors in Series:

Power dissipated by a resistor:

The power dissipated by a resistor of resistance R with potential difference V across it and current I passing through it is given by:

Ohm’s law:

Potential Difference (V) across a resistor of resistance R when current I passes through it is given by Ohm’s law:

Let us find the resistance of the two bulbs.

We know that,

Hence,

(i)

In series, the net resistance is:

The current in the circuit is

The power dissipated in the first bulb:

The power dissipated in the first bulb:

(ii)

In parallel, the potential through both is V. Hence the power is the same as the rated power i.e. P1 and P2.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :

Power P is to be Physics - Exemplar

Sometimes it is sHC Verma - Concepts of Physics Part 2

Consider a circuiHC Verma - Concepts of Physics Part 2

Two electriPhysics - Board Papers

A resistor of resHC Verma - Concepts of Physics Part 2

Two bulbs are ratPhysics - Board Papers

A room has AC runPhysics - Exemplar

Two resistors R aHC Verma - Concepts of Physics Part 2