I\'ve got a garden hose. It is a fixed length and diameter. I\'ve hooked it up t

Question

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. 3. 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 I drill 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? 4.

Explanation / Answer

Q3.

If we have a water pump that exerts pressure (voltage) to push water around a circuit (current) through a restriction (resistance), we can use Ohm's Law.

If the resistance to water flow stays the same and the pump pressure increases(hi pressure), the flow rate must also increase.
V = IR
So,
Pressure = Increase due to Voltage = Increase
Flow rate = Increase due to Current = Increase

Hence we get more water on high pressure due to greater flow rate.

Pls post other ques separately.

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