Question

Two bulbs having 100w, 220v, and 60w, 220v. which has a greater resistance

Answer 1

Answer:

The Bulb with power 60W..

Explanation:

Let the resistance of bulb1 be R1 and bulb2 be R2.

Then,

P=V²/R1

R1=V²/P

R1=220×220/100

R1=484Ω

And,

P=V²/R2

R2=V²/P

R2=220×220/60

R2=792Ω

Answer 2

Answer:

The Bulb with power 60W..

Explanation:

Let the resistance of bulb1 be R1 and bulb2 be R2.

Then,

P=V²/R1

R1=V²/P

R1=220×220/100

R1=484Ω

And,

P=V²/R2

R2=V²/P

R2=220×220/60

R2=792Ω

Explanation:gg