Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 167 · 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 milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
2. 2.True or false: the ammeter measures voltage. (a) True (b) False
3. 3.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) how much a part resists (d) the push of a cell
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.True or false: the ammeter is joined across a part. (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 1.75 A?
7. 7.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
8. 8.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) resistance (d) current
10. 10.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) resistance (d) power
11. 11.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
12. 12.True or false: the voltmeter is joined in series. (a) False (b) True
13. 13.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
15. 15.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
16. 16.True or false: voltage is measured in amperes (A). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
18. 18.True or false: the ammeter measures current. (a) False (b) True
19. 19.Which of these is measured in amperes (A)? (a) power (b) current (c) resistance (d) how much a part resists
20. 20.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
21. 21.True or false: the voltmeter is joined across a part. (a) False (b) True
22. 22.True or false: resistance is measured in ohms (Ω). (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
25. 25.📏 How many watts (W) is 3.4 kW?
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
27. 27.📏 How many watts (W) is 4.5 kW?
28. 28.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
29. 29.True or false: current is measured in amperes (A). (a) True (b) False
30. 30.📏 How many ohms (Ω) is 6.2 kΩ?
31. 31.True or false: resistance is measured in amperes (A). (a) True (b) False
32. 32.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
33. 33.📏 How many watts (W) is 1.7 kW?
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
35. 35.📏 How many kilo-ohms (kΩ) is 400 Ω? =
36. 36.True or false: the push of a cell is measured in volts (V). (a) False (b) True
37. 37.True or false: current is measured in watts (W). (a) True (b) False
38. 38.True or false: power is measured in watts (W). (a) True (b) False
39. 39.📏 How many watts (W) is 4.9 kW?
40. 40.📏 How many ohms (Ω) is 0.4 kΩ?

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