Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 169 · 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.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
2. 2.📏 How many kilowatts (kW) is 4000 W? =
3. 3.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
4. 4.📏 How many amperes (A) is 1890 mA? =
5. 5.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
7. 7.Which of these is measured in amperes (A)? (a) power (b) current (c) voltage (d) energy used each second
8. 8.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) power (d) resistance
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.📏 How many kilo-ohms (kΩ) is 900 Ω? =
12. 12.📏 How many milliamperes (mA) is 0.4 A?
13. 13.True or false: the voltmeter measures voltage. (a) True (b) False
14. 14.📏 How many amperes (A) is 2220 mA? =
15. 15.True or false: the ammeter is joined across a part. (a) True (b) False
16. 16.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) energy used each second (d) the push of a cell
17. 17.📏 How many kilowatts (kW) is 1700 W? =
18. 18.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
20. 20.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
21. 21.True or false: power is measured in amperes (A). (a) False (b) True
22. 22.True or false: the voltmeter is joined across a part. (a) False (b) True
23. 23.True or false: resistance is measured in amperes (A). (a) False (b) True
24. 24.Which of these is measured in watts (W)? (a) resistance (b) energy used each second (c) how much a part resists (d) current
25. 25.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
28. 28.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
29. 29.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
30. 30.True or false: current is measured in watts (W). (a) True (b) False
31. 31.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
32. 32.True or false: the voltmeter measures current. (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) voltage (d) energy used each second
34. 34.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
35. 35.📏 How many milliamperes (mA) is 2.52 A?
36. 36.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) how much a part resists (c) voltage (d) current
37. 37.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
38. 38.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
39. 39.📏 How many watts (W) is 1.1 kW?
40. 40.True or false: resistance is measured in ohms (Ω). (a) False (b) True

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