Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 761 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.True or false: power is measured in watts (W). (a) True (b) False
2. 2.True or false: the ammeter measures current. (a) True (b) False
3. 3.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
5. 5.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
6. 6.True or false: the flow of charge is measured in watts (W). (a) False (b) True
7. 7.True or false: current is measured in volts (V). (a) True (b) False
8. 8.📏 How many watts (W) is 5 kW?
9. 9.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
10. 10.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) power
11. 11.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) energy used each second (d) how much a part resists
16. 16.📏 How many ohms (Ω) is 4.3 kΩ?
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) energy used each second (c) current (d) how much a part resists
18. 18.True or false: resistance is measured in amperes (A). (a) True (b) False
19. 19.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
20. 20.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
21. 21.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
22. 22.📏 How many amperes (A) is 2440 mA? =
23. 23.True or false: the push of a cell is measured in volts (V). (a) False (b) True
24. 24.True or false: the voltmeter measures voltage. (a) True (b) False
25. 25.📏 How many kilowatts (kW) is 300 W? =
26. 26.📏 How many watts (W) is 2.5 kW?
27. 27.True or false: current is measured in amperes (A). (a) True (b) False
28. 28.Which of these is measured in watts (W)? (a) power (b) resistance (c) the flow of charge (d) how much a part resists
29. 29.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) voltage (d) the flow of charge
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 2.97 A?
32. 32.📏 How many kilowatts (kW) is 550 W? =
33. 33.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
36. 36.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) energy used each second (d) the flow of charge
37. 37.True or false: energy used each second is measured in watts (W). (a) True (b) False
38. 38.📏 How many ohms (Ω) is 5.3 kΩ?
39. 39.📏 How many kilowatts (kW) is 150 W? =
40. 40.True or false: the flow of charge is measured in amperes (A). (a) False (b) True

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