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Science

Dynamic Electricity

Grade 9 · Middle School

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  1. Question 1 of 20Easy

    The SI unit of electric current is ...

  2. Question 2 of 20Easy

    The unit of electrical resistance is ...

  3. Question 3 of 20Easy

    The instrument used to measure electric current in a circuit is ...

  4. Question 4 of 20Easy

    The instrument used to measure electric voltage is ...

  5. Question 5 of 20Easy

    Ohm's law states that electric current is proportional to the ...

  6. Question 6 of 20Easy

    The conventional direction of electric current is from the ... terminal to the ... terminal.

  7. Question 7 of 20Medium

    A 20-ohm resistor is given a voltage of 10 volts. The current flowing through it is ...

  8. Question 8 of 20Medium

    A current of 2 A flows through a 6-ohm resistor. The voltage across the resistor is ...

  9. Question 9 of 20Medium

    A voltage of 12 V produces a current of 3 A in a resistor. The resistance of the resistor is ...

  10. Question 10 of 20Medium

    Three resistors of 2 ohms, 3 ohms, and 5 ohms are connected in series. Their total resistance is ...

  11. Question 11 of 20Medium

    Two resistors of 6 ohms and 3 ohms are connected in parallel. Their total resistance is ...

  12. Question 12 of 20Medium

    The electrical energy used by a device of power P over a time t is given by ...

  13. Question 13 of 20Medium

    An electrical device of 100 W runs for 5 hours. The electrical energy used is ...

  14. Question 14 of 20Medium

    The resistance of a conducting wire depends on ...

  15. Question 15 of 20Hard

    Two resistors of 4 ohms and 6 ohms are connected in series to a 20 V source. The current flowing is ...

  16. Question 16 of 20Hard

    Resistors of 4 ohms and 6 ohms are connected in parallel to a 12 V source. The total current in the circuit is ...

  17. Question 17 of 20Hard

    Two resistors R1 = 2 ohms and R2 = 4 ohms are connected in parallel. If the total current is 6 A, the current through R2 is ...

  18. Question 18 of 20Hard

    A house uses four 20 W lamps for 5 hours and one 100 W television for 4 hours each day. The total electrical energy per day is ...

  19. Question 19 of 20Hard

    Four identical resistors of 8 ohms each are connected in parallel. Their total resistance is ...

  20. Question 20 of 20Hard

    Two identical lamps are connected in series, then in parallel to the same voltage source. The correct statement is ...

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Dynamic Electricity — Science Grade 9 · Middle School — Question Bank — Nuvora