Question
A shopkeeper mixes 30 kg of rice which he purchased at
₹40/kg and 40 kg of rice which he purchased at ₹28/kg, and he sells the entire mixture at ₹28/kg. What is the profit or loss percentage (approximated to the nearest integer)?Solution
Two equal charges are placed at a distance d. At what point along the line joining them is the electric field zero?
According to Kepler’s third law of planetary motion, the square of the orbital period of a planet is proportional to the __________.
What is the function of a fuse in an electric circuit?
A machine does 600 J of work in 2 minutes. Find its power.
In a long solenoid of 200 turns/cm carrying a current i, the magnetic field at center is 6.28×10-2 T. If a second solenoid with 100 turns/c...
In AC circuits, AC meters measure –
What is the potential difference across a 5 Ω resistor when a current of 2 A flows through it?
The force of attraction between two masses is called —
Two capacitors, 2 µF and 3 µF, are charged separately to 100 V and 50 V respectively, and then connected positive to positive, negative to negative. F...
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