Question

What is the resistance of a 100W lightbulb as it is attached to a 120V outlet?

Answer 1

Answer:

Explanation:

POWER , P = 100 W

VOLTAGE APPLIED ,V = 120.

RESISTANCE , R=?

P = V²/R

R = V²/P

R = 120*120/100

R = 12*12

R = 144 OHMS.

THEREFORE THE RESISTANCE OF THE BULB IS 144 OHMS.

HOPE THIS HELPS.

Answer 2

Answer:

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explanation: so, here we want to find the resistance...

first of all, we know the relation,

between power, resistance and voltage..

ie, P=V^2/R..

so, from here we can find the resistance..

power=100W(given)

voltage=120V(")

so, resistance=v×v/p

R=120×120/100

=144Ohms....

so, the resistance of the light bulb is 144 ohms

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Hope it's help u......have a good day........ byeeeee