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13-05-2020
Physics

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What is the total resistance for the circuit? (must include unit - ohms)

What is the total resistance for the circuit must include unit ohms class=

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Chelboy Chelboy

13-05-2020

Answer:20 ohms

Explanation:

R1=40 ohms

R2=40 ohms

Let total resistance be R

It is a parallel connection

1/R=1/R1 + 1/R2

1/R=1/40 + 1/40

1/R=(1+1)/40

1/R=2/40

Cross multiply

1x40=2xR

40=2R

Divide both sides by 2

40/2=2R/2

20=R

R=20

Total resistance is 20 ohms

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