Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 907 · 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.📏 How many amperes (A) is 860 mA? =
2. 2.True or false: the voltmeter is joined in series. (a) False (b) True
3. 3.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) voltage (d) resistance
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
5. 5.📏 How many milliamperes (mA) is 0.08 A?
6. 6.True or false: the ammeter measures voltage. (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
9. 9.True or false: how much a part resists is measured in volts (V). (a) False (b) True
10. 10.True or false: the voltmeter measures voltage. (a) True (b) False
11. 11.📏 How many milliamperes (mA) is 1.74 A?
12. 12.📏 How many watts (W) is 4.8 kW?
13. 13.True or false: resistance is measured in volts (V). (a) False (b) True
14. 14.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
15. 15.📏 How many amperes (A) is 1580 mA? =
16. 16.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
17. 17.True or false: resistance is measured in ohms (Ω). (a) True (b) False
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
19. 19.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
20. 20.📏 How many kilowatts (kW) is 2550 W? =
21. 21.True or false: the push of a cell is measured in volts (V). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
23. 23.📏 How many milliamperes (mA) is 1.61 A?
24. 24.📏 How many kilo-ohms (kΩ) is 400 Ω? =
25. 25.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
26. 26.True or false: the ammeter measures current. (a) False (b) True
27. 27.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) the flow of charge (d) power
28. 28.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
29. 29.True or false: the voltmeter measures current. (a) True (b) False
30. 30.True or false: the ammeter is joined in series. (a) True (b) False
31. 31.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
32. 32.📏 How many watts (W) is 2.4 kW?
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
34. 34.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
35. 35.📏 How many amperes (A) is 1140 mA? =
36. 36.True or false: voltage is measured in watts (W). (a) False (b) True
37. 37.📏 How many amperes (A) is 50 mA? =
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.True or false: energy used each second is measured in volts (V). (a) False (b) True
40. 40.Which of these is measured in volts (V)? (a) resistance (b) energy used each second (c) how much a part resists (d) the push of a cell

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