Bulb ܣ is rated for 20W at 12V. Bulb ܤ is rated for 20W at 120V. The two bulbs are mistakenly mixed up so that bulb ܣ is connected to a 120V line and bulb ܤ is connected to a 12V line. a. Determine the power dissipated by Bulb ܣ while connected to the 120Vline. b. Determine the power dissipated by Bulb ܤ while connected to the 12Vline. c. Which bulb, if any, is more likely to burn out and why?

a. 2000W

b.0.2W

c. Bulb 1

Explanation:

Data given:

bulb 1 rating =20w,12v

bulb 2 rating =20w,120v.

we calculate the resistance for each bulb

for bulb 2

when miss connection occur we need to calculate the dissipated power from wash bulb

a. for bulb 1 with R=7.2ohms and V=120v,

the power is calculated as

b. for bulb 2 with R=720 ohms and V=12v,

the power is calculated as

c. Bulb 1 is more likely to burn out because it is operating above the rated power.

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

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⇒ 5.3 cm/s2