Q1. The SI unit of electric current is:
Q2. A voltmeter is connected in a circuit:
Q3. An ammeter is connected in a circuit:
Q4. The V-I graph for an ohmic conductor is:
Q5. According to Ohm’s law, V = IR. If V is doubled keeping R constant, then the current will:
Q6. The SI unit of resistivity is:
Q7. Which of the following does NOT affect the resistance of a conductor?
Q8. Three resistors of 3 Ω each are connected in series. The equivalent resistance is:
Q9. Three resistors of 3 Ω each are connected in parallel. The equivalent resistance is:
Q10. In a series circuit, if one component fails:
Q11. Joule’s law of heating states that heat produced H is equal to:
Q12. Which material is used for making fuse wire?
Q13. The formula for electric power is:
Q14. 1 kilowatt-hour (kWh) is equal to:
Q15. Why is tungsten used for making filaments of electric bulbs?
Q16. Household electrical appliances are connected in:
Q17. If the resistance of a conductor is doubled and the voltage remains the same, the current will:
Q18. A 100 W bulb is used for 10 hours. The energy consumed is:
Q19. The resistivity of a material depends on:
Q20. In a parallel circuit, the total resistance is:
