A company sells a gadget which it claims will lower the voltage of your electric water storage heater by 20% and thus it will reduce your electricity consumption by 20%. The heater is rated 2 kW at 230 V. a) Do you agree with the claim of the company? b) What evidence can you produce to support your opinion?
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
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A company sells a gadget which it claims will lower the voltage of your electric water storage heater by 20% and thus it will reduce your electricity consumption by 20%. The heater is rated 2 kW at 230 V. a) Do you agree with the claim of the company? b) What evidence can you produce to support your opinion? |
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