Question
Consider the following statements about static
electricity: (I) It is the electricity built up on the surface of a substance. (II) It is generated by power plants and batteries. (III) Static electricity is uncontrolled.Solution
Static electricity is the buildup of an electric charge on the surface of objects, which typically occurs through contact or friction between materials. Unlike current electricity, it is not generated by power plants or batteries and is often uncontrolled, leading to sudden discharges like sparks.
- 5 years from now, the ratio of ages of Asha and Kiran will be 3:4 respectively. The total of their current ages is 95 years. What is the difference in thei...
Age of ‘A’ after 16 years will be three time of his age 12 years ago. Eight years hence from now, ratio of ages of ‘A’ and ‘B’ will be 2:3, ...
The ages of A, B and C together are 63 years. B is thrice as old as A and C is 8 years older than A. What is the difference between ages of B and C?
Ratio of present age of 'A' to that of 'B' is 4:7. If the age of 'B' three years hence from now will be 31 years, then after how many years, the ratio o...
The sum of ages of 4 children born at the intervals of 3 years each is 38 years. Find out the age of the youngest child.
Shalini is younger than Rashi by 3 years. If the ratio of Shalini and Rashi ages is 4:5 respectively, then find the age of Shalini.
The ratio of age of Sahil and his son is 7:2. If the difference of their ages 7 year ago was 25, then find the sum of ages of Sahil and his son 12 year...
- The current age of Puneet is 37.5% greater than Bittu's present age. Additionally, in eight years, the average of their ages will be 11 years more than Bit...
Present age of ‘A’ is 40% more than that of ‘B’. If 25 years hence from now, ‘B’ will be 15 years younger than ‘A’, then find the sum of...
In a family of four, the average age of Anu, Ben, Carla, and Dan is 28 years. The ratio of Carla's to Eva's present ages is 5:6, and Ben's age is 20% le...
Relevant for Exams:
