Question

If the potential differences across three resistances connected in parallel are V1,V2&V3 the potential difference across the total resistance V =

Answer 1

Answer:

1/V1+1/V2+1/V3

Explanation:

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Answer 2

Concept:

• Electric circuits
• A parallel arrangement of resistances
• The resistors in a parallel circuit are set up with their heads connected to one another and their tails to another.
• The parallel arrangement of resistors is connected with the same potential difference.

Given:

• The potential difference across resistor 1 = V1
• The potential difference across resistor 2 = V2
• The potential difference across resistor 3 = V3
• All resistors are connected in parallel

Find:

• The potential difference across the total resistance

Solution:

For resistors arranged in parallel, we know that the potential difference across each resistor is the same.

V1 = V2 = V3

The potential difference across the total resistance is also equal to V1, V2 and V3

V = V1 = V2 = V3

The potential difference across the total resistance is V1 = V2 = V3

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