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What is the relationship between current voltage and resistance What law do we use to understand it?
The relationship between voltage, current, and resistance is described by Ohm’s law. This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r.
How do you explain resistance to a child?
Resistance – Resistance measures how well a material or object conducts electricity. Low resistance means the object conducts electricity well, high resistance means the object does not conduct electricity well.
What is current voltage and resistance for kids?
The voltage is the water pressure, the current is the amount of water flowing through the pipe, and the resistance is the size of the pipe. More water will flow through the pipe (current) the more pressure is applied (voltage) and the bigger the pipe is (lower the resistance). 1.
What is the relationship between current and resistance?
The relationship between Voltage, Current and Resistance forms the basis of Ohm’s law. In a linear circuit of fixed resistance, if we increase the voltage, the current goes up, and similarly, if we decrease the voltage, the current goes down. This means that if the voltage is high the current is high, and if the voltage is low the current is low.
What happens when you increase the resistance of a voltage?
Likewise, if we increase the resistance, the current goes down for a given voltage and if we decrease the resistance the current goes up. Which means that if resistance is high current is low and if resistance is low current is high.
Which is the difference between voltage and current?
Voltage is the difference in charge between two points. Current is the rate at which charge is flowing. This value is usually represented in schematics with the greek letter “&ohm”, which is called omega, and pronounced “ohm”. Ohm’s Law. Combining the elements of voltage, current, and resistance, Ohm developed the formula:
Which is a good analogy for current and voltage?
\\$\\begingroup\\$ This is a bad analogy. A good analogy is water flowing through a pipe between two potentials. Potential difference of two ends is like voltage , water speed is like current , and friction of the pipe is like resistance.