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Worksheet – 3, 1. One of the following symbols that represents variable resistance. That is, , 2. Name the components connected in series and parallel in the, depicted circuit diagram, , 3. State Ohm's law, 4. Is V proportional to I or I is proportional V in the verification of ohm's law, experiment. Justify your answer, 5. Write the relationship between R, V and I (Equation), 6. What is electric resistance? Write its symbol and S I unit, 7. Define 'one ohm' of resistance., 8. Write the 4 factors on which the resistance of a conductor depends, 9. A potential difference of 20 V is applied across the ends of a resistance, 5 ohms. Find the current, 10. A resistance of 20 ohm has a current of 2 ampere flowing in it., Calculate the potential difference between its ends.