What is the relationship between voltage and current?

Answer 1

You need to figure in resistance also. The formula is I=E/R. Current (I) = Voltage (E) divided by Resistance (R). At the same resistance, if voltage goes up, so does current.

Alternative Answer

The ratio of voltage (U) to current (I) is called 'resistance', i.e: R = U/I. If this ratio is constant for variations in voltage, then the circuit is said to be 'linear' or 'ohmic', and obeys Ohm's Law. If the ratio changes for variations in voltage, then the circuit is said to be 'non-linear' or 'non-ohmic', and the circuit does not obey Ohm's Law. As most circuits are non-linear, it is clear that Ohm's Law is not a universal law.

Answer 2

You need to figure in resistance also. The formula is I=E/R. Current (I) = Voltage (E) divided by Resistance (R). At the same resistance, if voltage goes up, so does current.

Alternative Answer

The ratio of voltage (U) to current (I) is called 'resistance', i.e: R = U/I. If this ratio is constant for variations in voltage, then the circuit is said to be 'linear' or 'ohmic', and obeys Ohm's Law. If the ratio changes for variations in voltage, then the circuit is said to be 'non-linear' or 'non-ohmic', and the circuit does not obey Ohm's Law. As most circuits are non-linear, it is clear that Ohm's Law is not a universal law.

Answer 3

i=u/r

Alternative Answer

The ratio of voltage (U) to current (I) is called 'resistance', i.e: R = U/I. If this ratio is constant for variations in voltage, then the circuit is said to be 'linear' or 'ohmic', and obeys Ohm's Law. If the ratio changes for variations in voltage, then the circuit is said to be 'non-linear' or 'non-ohmic', and the circuit does not obey Ohm's Law. As most circuits are non-linear, it is clear that Ohm's Law is not a universal law.

Answer 4

The true relation between voltage and current is that voltage is current times resistance. (Ohm's Law) Voltage is electrical pressure: Joules per Coulomb. Current is electrical flow: Coulombs per Second. Power (watts) is Voltage times Current (Joules per Second)

Answer 5

Voltage, which belongs to the concept of circuit. For a dry battery, the voltage is 1.5V, that is to say, the "potential difference" between the positive and negative poles is 1.5V, that is, the potential at both ends of the battery is different and high and low. When an external circuit is connected, electricity can flow from the end with high potential to the end with low potential to form a current, just as water flows from high to low.

Current refers to the movement of charged particles. Charged particles can be electrons, ions, or holes in semi layered materials. The moving medium can be solid, liquid, gas, or in vacuum. The definition of current is "the amount of electricity passing through per unit time", so it depends on the speed of time. Common currents include: conductor current, current of lightning breaking through air, current in vacuum devices (electronic tube, various electric vacuum light sources, traveling wave tube of radar, magnetron of microwave oven). If you wave a brush in the air after friction and electrification, it is also a kind of current.

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Answer 6

Ohm's Law: Resistance = Voltage divided by Current