QUESTION: Why is the electric field always at right angles to the equipotential surface? Explain. ANSWER: If the electric field is not...

QUESTION: Why does the vehicle with a flattened tyre stop sooner than the one with inflated tyres? ANSWER: Due to flattening of tyres,...

QUESTION: Hydrogen is in abundance around the sun but not around earth. Why? ANSWER: The escape velocity on the Sun is very high as...