Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 938 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
2. 2.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
3. 3.📏 How many milliamperes (mA) is 1.02 A?
4. 4.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
7. 7.📏 How many ohms (Ω) is 1.4 kΩ?
8. 8.True or false: energy used each second is measured in amperes (A). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
10. 10.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
11. 11.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) the push of a cell (d) resistance
12. 12.📏 How many amperes (A) is 2970 mA? =
13. 13.True or false: the voltmeter measures current. (a) True (b) False
14. 14.📏 How many ohms (Ω) is 8.4 kΩ?
15. 15.True or false: resistance is measured in watts (W). (a) True (b) False
16. 16.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the push of a cell (d) the flow of charge
17. 17.📏 How many kilowatts (kW) is 850 W? =
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.📏 How many ohms (Ω) is 6.6 kΩ?
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) a bigger tank
21. 21.📏 How many amperes (A) is 2450 mA? =
22. 22.True or false: current is measured in amperes (A). (a) True (b) False
23. 23.True or false: the ammeter measures current. (a) False (b) True
24. 24.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
25. 25.📏 How many kilowatts (kW) is 1100 W? =
26. 26.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) energy used each second
27. 27.📏 How many milliamperes (mA) is 0.17 A?
28. 28.True or false: voltage is measured in volts (V). (a) True (b) False
29. 29.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
30. 30.📏 How many kilowatts (kW) is 3200 W? =
31. 31.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
32. 32.📏 How many kilowatts (kW) is 2600 W? =
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) current (c) the push of a cell (d) resistance
34. 34.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
35. 35.📏 How many kilowatts (kW) is 50 W? =
36. 36.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
37. 37.True or false: power is measured in amperes (A). (a) False (b) True
38. 38.📏 How many watts (W) is 2.6 kW?
39. 39.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) current
40. 40.True or false: voltage is measured in ohms (Ω). (a) True (b) False

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