Chapter 5: Magnetism and Matter
5.1 Answer the following questions regarding earth’s magnetism:(a) A vector needs three quantities for its specification. Name thethree independent quantities conventionally used to specify theearth’s magnetic field.(b) The angle of dip at a location in southern India…
Chapter 4: Moving Charges and Magnetism
4.1 A circular coil of wire consisting of 100 turns, each of radius 8.0 cmcarries a current of 0.40 A. What is the magnitude of the magneticfield B at the centre of the coil? 4.2 A long…
Chapter 3: Current Electricity
3.1 The storage battery of a car has an emf of 12 V. If the internalresistance of the battery is 0.4 Ω, what is the maximum currentthat can be drawn from the battery? 3.2 A battery of…
Chapter 2: Electrostatic Potential and Capacitance
EXERCISES 2.1 Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. Atwhat point(s) on the line joining the two charges is the electricpotential zero? Take the potential at infinity to…
Class 12 Physics Chapter 1: Electric Charges And Fields
EXERCISES 1.1 What is the force between two small charged spheres havingcharges of 2 × 10–7C and 3 × 10–7C placed 30 cm apart in air? 1.2 The electrostatic force on a small sphere of charge 0.4…
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