Q1. What constitutes an electric current in a conductor?
Q2. What is the SI unit of electric current?
Q3. How is electric current expressed?
Q4. What is the direction of conventional electric current?
Q5. Which instrument measures electric current?
Q6. What is the unit of electric charge?
Q7. What makes electric charge flow in a circuit?
Q8. What is the unit of electric potential difference?
Q9. How is the potential difference between two points defined?
Q10. Which instrument measures potential difference?
Q11. What does Ohm's law state?
Q12. What is the formula for Ohm's law?
Q13. What is the SI unit of resistance?
Q14. What is the reciprocal of resistance?
Q15. What does the resistance of a conductor depend on?
Q16. What is the resistivity of a material?
Q17. What is the unit of resistivity?
Q18. What does Joule's law of heating state?
Q19. What is the practical application of the heating effect of electric current?
Q20. What is the SI unit of electric power?
Q21. How is electric power calculated?
Q22. What is the commercial unit of electric energy?
Q23. How is energy consumption calculated?
Q24. What is the potential difference across a resistor if 100 J of heat is produced in 1 s?
Q25. What determines the rate of energy delivery by a current?
Q26. What happens to the current if the resistance is doubled?
Q27. What is the total resistance in a series circuit with resistances 2Ω, 3Ω, and 5Ω?
Q28. What is the total resistance in a parallel circuit with resistances 2Ω, 3Ω, and 6Ω?
Q29. How are resistors connected in a series circuit?
Q30. How are resistors connected in a parallel circuit?
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