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Electric current flows between two points only when there is a potential difference between them. According to Ohm’s law, current (I) through a conductor between two points is directly proportional to the potential difference (V) and inversely proportional to the resistance (R), (I = {V}/{R}). Hence, if two charged bodies have the same potential, no current will flow between them, regardless of their charge or capacity.
A number is such that when it is multiplied by 6, it gives another number which is as much above from 210 as the original number (itself) is below 210. ...
What is the average of the squares of the first 35 natural numbers?
There are two sections A and B of a class, consisting of 38 and 42 students, respectively. If the average weight of the students of section A is 55 kg a...
Rajat aims to save an average of Rs. 750 per month over the course of a year. For the first 8 months, his monthly income was Rs. 3,000, and he spent 80%...
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest chi...
The average cost of three chairs is Rs.16000. The average cost decrease by 20% when one more chair is included. What is the cost price of the 4th
3 years ago, the average age of a family of 5 members was 17 years. A baby being born, the average age of the family is 17 years. The present age of the...
Average of four numbers is 20. Sum of smallest and largest number is 50. If difference between other two numbers is 2, then find the square of second sm...
The average of three numbers is 21. The first number is double the second, and the third number is double the first. Calculate the sum of the first and ...
