Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 671 · 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.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
3. 3.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
4. 4.📏 How many milliamperes (mA) is 0.07 A?
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
6. 6.Which of these is measured in volts (V)? (a) current (b) power (c) energy used each second (d) voltage
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
8. 8.Which of these is measured in amperes (A)? (a) current (b) voltage (c) the push of a cell (d) resistance
9. 9.📏 How many milliamperes (mA) is 0.39 A?
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.True or false: current is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.📏 How many watts (W) is 1.9 kW?
15. 15.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) resistance (d) the push of a cell
16. 16.True or false: the voltmeter measures current. (a) False (b) True
17. 17.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
18. 18.📏 How many ohms (Ω) is 5.7 kΩ?
19. 19.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) power (d) current
20. 20.True or false: energy used each second is measured in amperes (A). (a) False (b) True
21. 21.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
22. 22.True or false: energy used each second is measured in watts (W). (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
24. 24.True or false: voltage is measured in watts (W). (a) False (b) True
25. 25.📏 How many amperes (A) is 750 mA? =
26. 26.True or false: the ammeter is joined in series. (a) True (b) False
27. 27.True or false: the voltmeter is joined in series. (a) False (b) True
28. 28.📏 How many kilo-ohms (kΩ) is 2400 Ω? =
29. 29.True or false: the voltmeter measures voltage. (a) True (b) False
30. 30.True or false: power is measured in watts (W). (a) False (b) True
31. 31.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
32. 32.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
33. 33.📏 How many amperes (A) is 1360 mA? =
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
35. 35.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) resistance (d) power
36. 36.📏 How many milliamperes (mA) is 1.1 A?
37. 37.True or false: the push of a cell is measured in volts (V). (a) False (b) True
38. 38.📏 How many watts (W) is 0.6 kW?
39. 39.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
40. 40.True or false: resistance is measured in volts (V). (a) True (b) False

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