health 2.docx

Name one advancement in electricity distribution that improves efficiency. 2. List a common application of electricity. 3. What factors can cause the cost of electricity in Ireland to vary? 4. What factor does NOT influence electricity cost? 5. What does resistance measure in an electrical c...

Name one advancement in electricity distribution that improves efficiency. 2. List a common application of electricity. 3. What factors can cause the cost of electricity in Ireland to vary? 4. What factor does NOT influence electricity cost? 5. What does resistance measure in an electrical circuit? 6. What is the formula that represents Ohm\'s Law? 7. In what unit is electric power measured? 8. What is the difference between AC and DC power? 9. What does the frequency of AC power indicate? 10. Explain the relationship between voltage, current, and resistance in an electrical circuit. 11. Which formula is used to calculate power in a circuit? 12. Which instrument is used to measure the current flow in a circuit? 13. How do you measure voltage across a component? 14. Which test instrument can measure current, voltage, and resistance? 15. What is the formula used to calculate the efficiency of an electric component?