Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 49 · 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) the push of a cell (b) how much a part resists (c) current (d) energy used each second
2. 2.📏 How many ohms (Ω) is 9.8 kΩ?
3. 3.True or false: energy used each second is measured in amperes (A). (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
5. 5.📏 How many amperes (A) is 210 mA? =
6. 6.True or false: the push of a cell is measured in watts (W). (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
8. 8.📏 How many watts (W) is 1.1 kW?
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the flow of charge (d) resistance
11. 11.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
12. 12.True or false: energy used each second is measured in watts (W). (a) False (b) True
13. 13.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) energy used each second
14. 14.📏 How many watts (W) is 2.2 kW?
15. 15.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) resistance (d) voltage
16. 16.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
17. 17.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) power (d) voltage
18. 18.True or false: energy used each second is measured in volts (V). (a) True (b) False
19. 19.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
20. 20.📏 How many ohms (Ω) is 6.1 kΩ?
21. 21.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
23. 23.📏 How many ohms (Ω) is 4.5 kΩ?
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
25. 25.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
26. 26.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) current (d) power
27. 27.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
28. 28.📏 How many amperes (A) is 300 mA? =
29. 29.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
30. 30.📏 How many amperes (A) is 970 mA? =
31. 31.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) the flow of charge (d) the push of a cell
32. 32.True or false: current is measured in amperes (A). (a) False (b) True
33. 33.📏 How many kilowatts (kW) is 1550 W? =
34. 34.True or false: how much a part resists is measured in watts (W). (a) True (b) False
35. 35.True or false: the flow of charge is measured in volts (V). (a) False (b) True
36. 36.📏 How many kilo-ohms (kΩ) is 800 Ω? =
37. 37.📏 How many kilowatts (kW) is 4850 W? =
38. 38.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.📏 How many watts (W) is 3.6 kW?

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