A peice of wire of lenght l and area of cross section A has a resistance R. Another peice of wire of the same material and the same length but twice the area of cross section is connected end to end with previous wire. The effective resistance is?

the correct choice is a .

do not post any more test or exam questions on

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

prndulum needs thread, weight clock to time swings