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…
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World of Learning
Here's What Happening in The
World of Learning
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…
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…
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…
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…