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When you plot a graph of voltage against current, you can end up with a straight line or a curved line.
If you have a straight line, then it shows that the change in current is directly proportional to the change in voltage and, so, the circuit is obeying Ohm's Law. If the graph is a curve, then the change in current is not proportional to the change in voltage and, so, the circuit is not obeying Ohm's Law.
In the case of a straight-line graph, the gradient of the graph indicates the resistance of the circuit. The greater the gradient, the higher the circuit resistance.
In the case of a curved-line graph, the gradient (i.e. the tangent) at each point along that curve will indicate the (changing) resistance at each of those points.
What else can I help you with?
Is there any similarity between the two graphs plotted between voltage and current one is 1kohm resistance and another is 2.2kohm resistance?
Of course both are lines but different slopes or gradients.
What is the relationship between voltage and current as shown in the graph of voltage vs current?
In the graph of voltage vs current, the relationship between voltage and current is linear. This means that as voltage increases, current also increases proportionally.
What does the current vs voltage graph reveal about the relationship between current and voltage in the given circuit?
The current vs voltage graph shows that there is a linear relationship between current and voltage in the given circuit. This means that as voltage increases, the current also increases proportionally.
Why there is a relationship between current and voltage?
because current is the ratio of voltage and resistance.
What is the phase angle between voltage and current in a purely resistive circuit?
The phase angle between voltage and current in a purely resistive circuit is zero. Voltage and current are in phase with each other.
What is the relationship between the current and voltage in a pure inductive circuit?
In a pure inductive circuit, the relationship between current and voltage is such that the current lags behind the voltage by a phase angle of 90 degrees. This means that the current and voltage are out of phase with each other, with the current reaching its peak value after the voltage has reached its peak value.
What is produced first current or voltage?
current flows as a result of potential difference i.e. in a circuit if there is no voltage difference between two points, no current can flow between those two points. So voltage has to be produced first.
Relation between voltage and current if you consider capacitor ckt?
In a capacitor ckt, current will be lead ahead from voltage by an angle 90 degree. Because for a capacitor the relationship between voltage and current is given as v=(jx)i , where v= voltage i= current jx=capacitive reactance
What is the relationship between power, voltage, and current, and how can it be expressed mathematically using the formula power equals voltage multiplied by current?
The relationship between power, voltage, and current can be expressed mathematically using the formula: Power Voltage x Current. This formula shows that power is directly proportional to both voltage and current. In other words, an increase in either voltage or current will result in an increase in power.
What is the relationship between power, current, and voltage in an electrical circuit?
In an electrical circuit, power is the product of current (the flow of electric charge) and voltage (the force that drives the current). The relationship between power, current, and voltage is described by the equation P I x V, where P is power, I is current, and V is voltage. This equation shows that power increases when either current or voltage increases in a circuit.
How is different between voltage and current?
voltage = the electrical "pressure"current = the electrical "movement rate" or "flow rate"
What is the relationship between current and voltage in a simple current?
According to ohms law I=V/R; So current is directly proportional to voltage
