What happen when voltage decreases and current increases?

Answer 1

Yes. As long as the load stays the same. Voltage equals the resistance of the load times the current or amperage. Or , in this case, as an example, if the load is the same, the voltage is 240 and current is 10 amps. At 120 volts, the current is 20 amps. Current x resistance(or the load)=voltage. With simple math, the equation can be moved around.

Answer 2

Current does not decrease when voltage increases; current also increases.

You may be thinking of a particular case where the power is held constant, but you did not say that in the question.

The general answer is that, all other things being equal, if the voltage increases, then the current will also increase, along with the power.

Another Answer

High voltages are used in electricity transmission/distribution systems in order to minimise the load currents in the transmission/distribution lines. This is because, for a given load, the higher the supply voltage, the lower the resulting load current (power being the product of voltage and current).

We can see a similar effect with a simple transformer. The higher the voltage induced into one or other of the windings, the lower the corresponding current.

Answer 3

Electricity transmission/distribution systems operate at very high voltages in order to minimise the value of current flowing in the transmission lines. This is because, for a given load, the higher the voltage, the lower the resulting load current (power being the product of voltage and current). If the value of voltage were allowed to fall, then the load current would then increase to compensate. In transmission lines, this would be undesirable, as the increased current would result in greater voltage drops along the length of the line, and greater line (I2R) losses.

But, for an ordinary, d.c. circuit in which a supply voltage, such as that provided by a battery, supplies, say, a resistor, a decrease in voltage would result in a decrease in the load current.

Answer 4

P = V * I. If power remains constant, then as voltage decreases, current will increase.

Answer 5

Voltage is like a force on conductor's charged particles. The greater the force, the greater the current (in case if the resistance of conductor remains constant).

Answer 6

If the power remains constant then current increase with decrease in voltage

Answer 7

With a constant resistive load when the voltage decreases so will the current.

This is Ohm's law at its finest.

Answer 8

The current rises up rapidly.