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11.1 Consider the circuit diagram below. Switch S is OPEN. 11.1.1 Write down the reading on the following: (a) Voltmeter (V1) (1) (b) Ammeter (A1) (1) Switch S is now CLOSED. 11.1.2 Calculate the equivalent resistance of the circuit. (4) 11.1.3 Calculate the reading on voltmeter V2. (3) 11.1.4 How do the readings on ammeters … Read more

Two identical insulated spheres, X and Y, suspended by threads from a ceiling, areheld at a small distance apart, as shown in the diagram below. Sphere X carries a charge of + 4 x 10-18 C, while sphere Y has an excess of30 electrons. 10.1 Calculate the magnitude of the charge on sphere Y. (3) … Read more