Is it true that if two bulbs $60 W$ , $220 V$ and $40 W$ , $220 V$ are connected in series then $40 W$ will the bulb glow brighter?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

True

False

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The above statement is true.
It is known that the relation between power and resistance is,

P = \frac{V ²}{R}

Where

P, V

and

R

are the power, time and resistance of the device respectively.
Power is inversely proportional to resistance; therefore, a 40 W bulb will have more resistance, which means a greater voltage drop across the circuit, and it will glow brighter. Hence, The given statement is true.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE