Electronics - Voltage and Current - Discussion

As load increases, Potential drop occurs.

This is also explained by Kirchoff voltage law.

We cannot apply ohm's law for active elements.

The battery is already charged now when the load is connected it is in discharging mode.

So when load increases (here load increases means a device that we connected is drawing more current from source) voltage will come down gradually.

So it is not like R increases I decreases so V decreases.

One important thing is load resistance increases means are increasing.

But load increasing means the current that is drawing by the device is increasing.

I don't understand, for a battery voltage is considered content. Practically, it should reduce with time, so option D should be correct.

I am not getting it. Please explain me clearly.

P=VI and I=V/R.

We have these two laws. And most people get confused due to this. I will answer as simply as I can and I hope that everyone can understand my explanation.

In a circuit, in order for equipment to not become damaged, the power remains constant throughout the entire operation. It is true that current and voltage are directly proportional. So if current increases so will the voltage. But, The power needs to remain constant to balance the circuit. What happens then? Voltage and current are variable but power is constant.

So in order for the power to remain constant, if voltage becomes twice its initial value current must become 1/2 of its original value.

As P = VI. So, doing this the Power stays constant and the circuit is balanced.

Increasing of load means an increase of current in a circuit due to a decrease in resistance.

Because for example:
1) 100W bulb at 230v has 45 ohms.
2) 1000W iron at 230v has 4.5-ohm resistance.

Load increase current will be increased and the voltaga remain constant. i.e if home lamps adopt maximum 1 o r2 amp current if we increase the load and motor is connected in this circuit motor consume more current then lamp that's why load increase current will be increased and voltage is constant.

Why the other option is not correct any one can explain me?

v is directly proportion to i.