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UNIT 1
1. Find the number of protons, neutrons and electrons for 32Ge73 . Also find the electron configuration.
2. A lightning bolt with 8 kA strikes an object for 15 µ s.
a. How much charge is deposited on the object
b. Find the number electrons transferred to the object
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UNIT 2
3. 100 cells are arranged in two rows of 50 each in series and the two rows in parallel. The battery supplies a current of 1 A to an electric lamp having a resistance of 50 Ω. If the internal resistance of each cell is 2Ω, find the e.m.f of each cell.
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UNIT 3
4. A cube of material of side 1 cm has a resistance of 0.001 Ω between its opposite faces. If the same material has length of 9 cm and a uniform cross sectional area of 1 cm2, what will be the resistance of this wire?
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