Current Electricity Charging Discharging Of Capacitors Question 574

Question: Two bulbs X and Y having same voltage rating and of power 40 watt and 60 watt respectively are connected in series across a potential difference of 300 volt, then

[Orissa JEE 2005]

Options:

A) X will glow brighter

B) Resistance of Y is greater than X

C) Heat produced in Y will be greater than X

D) Voltage drop in X will be greater than Y

Show Answer

Answer:

Correct Answer: A

Solution:

Resistance $ \propto \frac{1}{\text{power}} $ . Thus, 40 W bulb has a high resistance. Because of which there will be more potential drop across 40 W bulb. Thus 40 W bulb will glow brighter.