Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 986 · 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.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) current (d) resistance
2. 2.📏 How many ohms (Ω) is 1.6 kΩ?
3. 3.📏 How many watts (W) is 4.7 kW?
4. 4.Which of these is measured in watts (W)? (a) power (b) current (c) voltage (d) the push of a cell
5. 5.True or false: power is measured in watts (W). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
8. 8.True or false: the ammeter measures voltage. (a) False (b) True
9. 9.True or false: how much a part resists is measured in volts (V). (a) False (b) True
10. 10.📏 How many ohms (Ω) is 1.8 kΩ?
11. 11.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) resistance
12. 12.True or false: how much a part resists is measured in watts (W). (a) True (b) False
13. 13.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
14. 14.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
15. 15.True or false: current is measured in ohms (Ω). (a) True (b) False
16. 16.True or false: resistance is measured in ohms (Ω). (a) False (b) True
17. 17.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.True or false: the push of a cell is measured in watts (W). (a) True (b) False
19. 19.📏 How many amperes (A) is 790 mA? =
20. 20.📏 How many milliamperes (mA) is 0.11 A?
21. 21.True or false: the voltmeter measures voltage. (a) True (b) False
22. 22.True or false: voltage is measured in ohms (Ω). (a) True (b) False
23. 23.True or false: the ammeter measures current. (a) True (b) False
24. 24.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
25. 25.True or false: current is measured in watts (W). (a) False (b) True
26. 26.📏 How many ohms (Ω) is 9.9 kΩ?
27. 27.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) the flow of charge
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 10 (d) 100
29. 29.📏 How many milliamperes (mA) is 0.41 A?
30. 30.True or false: the push of a cell is measured in volts (V). (a) True (b) False
31. 31.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
32. 32.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) how much a part resists (d) current
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
34. 34.📏 How many milliamperes (mA) is 1.7 A?
35. 35.Which of these is measured in amperes (A)? (a) the flow of charge (b) voltage (c) power (d) the push of a cell
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many milliamperes (mA) is 2.85 A?
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) the push of a cell (d) power

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