Alternating Currents | Old is Gold | XII
Short Questions
1. Why do we prefer a choke coil to rheostat in an a.c. current?
2. What is meant buy independence of an a.c. current?
3.
First law of thermodynamics- Old is Gold
Air escaping from an air-hose at a gas station always feels cold. Why?
Differentiate between isothermal and adiabatic change.
Refraction through prisms- Old is Gold
Under what condition does a prism produce the angle of minimum deviation?
What are the advantages of total reflecting prism
Electrical Circuits | Old is Gold | XII
Short Questions
1. State Kirchhoff`s laws of circuits.
2. Why does voltmeter measures current more accurately than an ammeter?
3.
Kinematics-Old is Gold
Because of air resistance, two objects of unequal mass do not fall at precisely the