b. To solve this problem, I'll assume
the resistance of the bulb is linear and remains constant when 1.5 volts is
applied.
R = V/I = 2.4/0.7 = 3.43 Ohms = Resistance of each bulb.
When 3 are connected in parallel,
Req = 3.43/3 = 1.14 Ohms.
I = V/Req = 1.5/1.14 = 1.31 Amps.
a. A prismatic object 8 cm wide by 16 cm long is weighed in water at a depth of 20 cm and found to weigh 11 N. What is its weight in water?
b. A light bulb in flashlight is labelled 2.4 V, 0.7 A. Find the equivalent resistance and the current if three of these light bulbs are connected in parallel to a standard C size 1.5 V battery.
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