Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 69 · 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 watts (W) is 1.1 kW?
2. 2.📏 How many milliamperes (mA) is 1.94 A?
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
4. 4.📏 How many milliamperes (mA) is 1.95 A?
5. 5.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
6. 6.True or false: the ammeter is joined across a part. (a) True (b) False
7. 7.📏 How many milliamperes (mA) is 1.6 A?
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
9. 9.📏 How many amperes (A) is 520 mA? =
10. 10.📏 How many milliamperes (mA) is 1.47 A?
11. 11.True or false: power is measured in amperes (A). (a) True (b) False
12. 12.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
13. 13.📏 How many amperes (A) is 2030 mA? =
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
16. 16.📏 How many watts (W) is 0.8 kW?
17. 17.📏 How many kilowatts (kW) is 3800 W? =
18. 18.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) the push of a cell (d) power
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
20. 20.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
21. 21.True or false: current is measured in ohms (Ω). (a) False (b) True
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) the push of a cell (c) resistance (d) power
24. 24.True or false: the ammeter is joined in series. (a) True (b) False
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
26. 26.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
27. 27.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) energy used each second (d) the flow of charge
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.True or false: voltage is measured in volts (V). (a) True (b) False
30. 30.True or false: voltage is measured in watts (W). (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 0.15 A?
32. 32.True or false: power is measured in watts (W). (a) True (b) False
33. 33.Which of these is measured in amperes (A)? (a) energy used each second (b) power (c) current (d) voltage
34. 34.📏 How many ohms (Ω) is 7.8 kΩ?
35. 35.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) the flow of charge (d) how much a part resists
36. 36.True or false: how much a part resists is measured in volts (V). (a) True (b) False
37. 37.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) resistance (d) voltage
38. 38.📏 How many ohms (Ω) is 1.1 kΩ?
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) power (d) the flow of charge
40. 40.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)

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