Question

Three v-I graphs are drawn individually for two resistor and their series combination.out of A,B,C which one represent the graph for series combination of the other two.give reason for your answer

Answer 1

Given: Three V-I graphs

To find: Which one represent the graph for series combination of the other two?

Solution:

• Now we have given that three V-I graphs are drawn individually for two resistor and their series combination.

• We have the formula: V = IR

• So R = V/I

• Then 1/R = dI/dV which is equal to the slope.

• This is maximum for C also.

• Resistance is maximum for A so A is series combination of B and C because the net resistance in series combination is always greater than the individual resistors.

Answer:

            So A is series combination of B and C

Answer 2

Answer:

The slope of the graph represents the resistance. Most of the time the equivalent resistance of series combination is greater than the highest resistance. We can calculate the slop by the formula 1/R = dI/dV , where d is any number.

Therefore in the above case C is the graph of series combination of the two resistance.