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Q: Potential difference 12 V and current 0.4 A calculate the resistance when?
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Calculate the resistance when current 0.24 and potential difference 4.0 A?

I don't no


How can you determine the resistance of a current?

Voltage = Current x Resistance giving us Current = Voltage / Resistance i.e. Voltage divided by resistance


One way to make current is to use a what?

You can apply a potential difference across a wire to cause a current to flow through. Ohm's Law allows you to calculate the amount of current based on the voltage supplied and the resistance of the circuit. I = current V = voltage or potential difference R = resistance I = V/R


Current is proportional to the potential difference and inversely proportional to its?

Current is proportional to the potential difference and inversely proportional to resistance. Ohm's law: Current equals voltage divided by resistance


Does potential difference change with change in resistance?

Changing the potential difference in a circuit does not change the resistance. Rather, it changes the current.


How is electrical resistance calculated?

Resistance (Ohms) = Potential Difference (Voltage) / Current (Amps)


How does resistance after current?

Assuming you are asking "How does resistance altercurrent?", then the answer is that, for a given value of potential difference, the current is inversely-proportional to the resistance. E.g. doubling the resistance will reduce the current by half.


What is the ratio of potential difference to the current of a circuit?

The name given by engineers to the ratio of "electrical potential difference" (expressed in volts) to "rate of current flow" (expressed in amperes) is "resistance" (expressed in ohms).


What conditions are necessary for a current to be present in a circuit?

some resistance and potential difference


What does the slope of a graph potential difference vs current represent?

resistance of a material


How is resistance calculated?

You can measure it, but you can't calculate it. That's why the resistance of a resistor is always printed on it, either in numbers or in color bands. Without that marking, the resistor is pretty useless. If it accidentally missed being marked during manufacture, it would be either discarded, or sold surplus for bubkes.


The ratio of the potential difference across a metallic conductor to the current in the conductor is known as?

That is the resistance, measured in ohms.