2. With the idea of parallel circuits in mind, explain why the current flowing o

Question

2. With the idea of parallel circuits in mind, explain why the current flowing out of a shower head is decreased when someone simultaneously flushes a toilet elsewhere in the house. 3. I've got a garden hose. It is a fixed length and diameter. I've hooked it up to a pump that brings water from a pond. The pump has two settings; low pressure and hi pressure. Using the equation V-IR, explain why I get more water coming out the hose on the hi-pressure setting. 4. I've collected water in a large barrel. I drill one small hole in the bottom and water comes spurting out. I drill another 4 holes and water comes spurting out through each of them. However, the amount of water per second coming out of the initial hole is less AFTER Idrill the other 4 holes. Why? On top of that, if I add up the amount of water per second coming out of all 5 holes i get a larger value than for just the initial 1-hole scenario. Why?

Explanation / Answer

1)

What happens in a parallel circuit?

The current is divided among the various alternate paths available in the circuit. As the current is divided, the individual current is reduced.

Say there is a single path. Current is flowing through it. When another path is added some current starts flowing through the second path as well. Thus this increases the current through the first path.

Similar is for the shower head and the flush.

Just as the flush is operated, some water is diverted to it thus reducing the water current in the shower head.

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