Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 591 · 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 4.7 kW?
2. 2.📏 How many watts (W) is 1.5 kW?
3. 3.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 How many watts (W) is 3.5 kW?
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
11. 11.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
12. 12.📏 How many ohms (Ω) is 0.2 kΩ?
13. 13.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) power (d) the flow of charge
14. 14.True or false: the voltmeter measures voltage. (a) True (b) False
15. 15.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) power (d) the push of a cell
16. 16.True or false: how much a part resists is measured in watts (W). (a) True (b) False
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
19. 19.True or false: the ammeter measures voltage. (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
22. 22.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
23. 23.True or false: current is measured in volts (V). (a) False (b) True
24. 24.True or false: voltage is measured in volts (V). (a) False (b) True
25. 25.📏 How many ohms (Ω) is 8.9 kΩ?
26. 26.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
27. 27.True or false: current is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: the ammeter is joined across a part. (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) voltage (d) resistance
30. 30.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) power (d) the push of a cell
31. 31.📏 How many watts (W) is 4.2 kW?
32. 32.True or false: the voltmeter measures current. (a) True (b) False
33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
34. 34.True or false: voltage is measured in amperes (A). (a) False (b) True
35. 35.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
36. 36.📏 How many kilo-ohms (kΩ) is 700 Ω? =
37. 37.📏 How many watts (W) is 4.6 kW?
38. 38.True or false: the flow of charge is measured in volts (V). (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 2.31 A?
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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