Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 940 · 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.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
2. 2.True or false: the flow of charge is measured in volts (V). (a) False (b) True
3. 3.📏 Which unit measures the push of a cell? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many watts (W) is 2.9 kW?
5. 5.📏 How many kilowatts (kW) is 250 W? =
6. 6.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
7. 7.True or false: the ammeter measures voltage. (a) False (b) True
8. 8.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
9. 9.📏 How many milliamperes (mA) is 0.79 A?
10. 10.📏 How many watts (W) is 0.3 kW?
11. 11.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
12. 12.📏 How many milliamperes (mA) is 1.51 A?
13. 13.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) current
14. 14.📏 How many milliamperes (mA) is 1 A?
15. 15.True or false: resistance is measured in watts (W). (a) True (b) False
16. 16.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
17. 17.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 How many ohms (Ω) is 5.7 kΩ?
19. 19.True or false: the ammeter is joined across a part. (a) False (b) True
20. 20.True or false: the voltmeter is joined across a part. (a) False (b) True
21. 21.True or false: the ammeter measures current. (a) True (b) False
22. 22.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) resistance
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
24. 24.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) how much a part resists (d) the flow of charge
25. 25.📏 How many watts (W) is 1.4 kW?
26. 26.📏 How many amperes (A) is 1270 mA? =
27. 27.True or false: voltage is measured in volts (V). (a) True (b) False
28. 28.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.📏 How many milliamperes (mA) is 2.36 A?
31. 31.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
32. 32.True or false: the ammeter is joined in series. (a) True (b) False
33. 33.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
34. 34.Which of these is measured in watts (W)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
35. 35.📏 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
36. 36.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
37. 37.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
38. 38.True or false: how much a part resists is measured in volts (V). (a) False (b) True
39. 39.True or false: the voltmeter is joined in series. (a) True (b) False
40. 40.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell

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