Elliptical Orbits
Sreeda asks: Why do planets move in elliptical paths and not in circular ones? Answer: Ellipse is a more general shape than a circle. Circle is a special case of ellipse when its semimajor axis and the...
View ArticleAlternating Current circuits
John Abraham Asks: “a circuit has a battery of emf E and internal resistance r.two inductors of inductance L1 and L2 are connected in series to the battery but parallel to each other.what is the...
View Articleyou are given two nichrome wire of same length and different thickness Which...
You are given two nichrome wire of same length and different thickness Which wire will get heated first Give reason.? Asked Merlin Mary Mathew Answer: If the wires are connected one by one to a source,...
View ArticlePrepare for Science Quizzes online
We are starting a series of quizzes to enable the students to practice for online quizzes. Take the sample quiz below for getting an idea on how the quizzes will be coming. If you like it, let us know....
View ArticleA numerical problem on Drift velocity
Two conducting wires X and Y of same diameter but different materials are joined in series across a battery . if the number density of electrons in X is twice that in Y . Find the ratio of drift...
View ArticleA Question from Current Electricity
Pratham asked: The resistances of 2 bulbs are in the ratio 1:2.if they are joined in series,find the ratio of the energy consumed by the 2 bulbs? Answer: When connected in series, the same current...
View ArticleAn idea shared by Eddie on speed of light barrier
If 24 lights in a series around a circle are wired so that each one switches on as soon as it “sees” the one next to it go on, and switches off as soon as it “sees” the one next to it go off, will the...
View ArticleResistors Combination – Numerical Problem
What is the effective resistance between P and Q in the diagram? Asked Malik Ahmed Answer : 8 ohms The Two arms have resistances 32 ohm and are in parallel, Their effective resistance is 1 ohms. This...
View Article
