Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 367 · 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.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
3. 3.📏 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
4. 4.📏 How many kilowatts (kW) is 4900 W? =
5. 5.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
6. 6.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
7. 7.Which of these is measured in watts (W)? (a) the flow of charge (b) how much a part resists (c) power (d) the push of a cell
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many amperes (A) is 2730 mA? =
10. 10.True or false: the voltmeter measures current. (a) False (b) True
11. 11.📏 How many kilo-ohms (kΩ) is 100 Ω? =
12. 12.📏 How many watts (W) is 2.5 kW?
13. 13.📏 How many milliamperes (mA) is 1.16 A?
14. 14.True or false: resistance is measured in volts (V). (a) True (b) False
15. 15.📏 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
16. 16.📏 How many ohms (Ω) is 2.2 kΩ?
17. 17.📏 How many amperes (A) is 1120 mA? =
18. 18.True or false: current is measured in volts (V). (a) False (b) True
19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.📏 How many ohms (Ω) is 5.7 kΩ?
22. 22.📏 How many watts (W) is 1.4 kW?
23. 23.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) how much a part resists (d) the push of a cell
24. 24.True or false: the ammeter measures voltage. (a) True (b) False
25. 25.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) voltage (d) energy used each second
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
28. 28.📏 How many amperes (A) is 2990 mA? =
29. 29.True or false: the ammeter is joined in series. (a) False (b) True
30. 30.📏 How many watts (W) is 1.3 kW?
31. 31.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
33. 33.📏 How many milliamperes (mA) is 2.83 A?
34. 34.True or false: voltage is measured in watts (W). (a) True (b) False
35. 35.Which of these is measured in volts (V)? (a) current (b) resistance (c) power (d) the push of a cell
36. 36.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) power (d) voltage
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
38. 38.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
39. 39.📏 How many milliamperes (mA) is 2.84 A?
40. 40.True or false: the push of a cell is measured in amperes (A). (a) True (b) False

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