Electronics - Voltage and Current - Discussion

Discussion Forum : Voltage and Current - General Questions (Q.No. 9)
9.
In practical applications, battery voltage:
is restored as soon as disconnect occurs
is lowered as the load increases
may be stored indefinitely
will be reduced to zero as power is drawn
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
45 comments Page 4 of 5.

Brindha.r said:   1 decade ago
Whenever load gets increases, current will get reduce. According to ohms law I is proportional to V. So voltage also reduced.

Hari said:   1 decade ago
What is the difference between load and load resistance?

Pavan kumar said:   1 decade ago
Each and every battery has some internal resistance, as the load is increased (ie. , load resistance is lowered) current increases which results in the increase of drop across the internal resistance resulting in the decrease of the voltage.

Sanky said:   1 decade ago
Due to internal resistance offered by battery itself.

Raj chauhan said:   1 decade ago
For here p=vi rule works because of load (power).

Aziz ur rehman said:   9 years ago
v is directly proportion to i.

Amar said:   9 years ago
Why the other option is not correct any one can explain me?

Abdul wajid said:   9 years ago
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.

Niamat said:   9 years ago
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.

Shatakshi said:   8 years ago
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.
(2)


Post your comments here:

Your comments will be displayed after verification.