A student constructed a simple electric circuit where two light bulbs were connected in parallel. The circuit power source was a 6.0-V cell. One of the light bulbs had a resistance of 25 ohms, and the other had a resistance of 50 ohms. What was the combined resistance of the light bulbs in the circuit? a) 75ohms

b) 42ohms

c) 25ohms

d) 17ohms

RT =  17 ohms

Explanation:

For two parallel resistances in a circuit the combined resistance is given by:

R1 = 25 ohms

R2 = 50 ohms

You replace the values of R1 and R2 in the formula for RT:

hence, the combined resitances is 17 ohms

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

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