Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 126 · 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 ammeter is joined in series. (a) False (b) True
2. 2.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) voltage (d) the flow of charge
3. 3.True or false: the push of a cell is measured in watts (W). (a) True (b) False
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
6. 6.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) the push of a cell (d) voltage
7. 7.True or false: the voltmeter measures voltage. (a) True (b) False
8. 8.📏 How many milliamperes (mA) is 2.81 A?
9. 9.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
10. 10.📏 How many milliamperes (mA) is 2.21 A?
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
12. 12.Which of these is measured in volts (V)? (a) current (b) the flow of charge (c) the push of a cell (d) how much a part resists
13. 13.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
14. 14.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) how much a part resists (d) power
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
18. 18.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.📏 How many amperes (A) is 60 mA? =
21. 21.📏 How many kilo-ohms (kΩ) is 7400 Ω? =
22. 22.True or false: voltage is measured in volts (V). (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
25. 25.📏 How many ohms (Ω) is 7.2 kΩ?
26. 26.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
27. 27.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
28. 28.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: the ammeter is joined across a part. (a) True (b) False
30. 30.📏 How many amperes (A) is 1690 mA? =
31. 31.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 1.55 A?
33. 33.📏 How many amperes (A) is 40 mA? =
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
36. 36.📏 How many ohms (Ω) is 10 kΩ?
37. 37.📏 How many milliamperes (mA) is 0.58 A?
38. 38.📏 How many watts (W) is 1.3 kW?
39. 39.📏 How many ohms (Ω) is 7.8 kΩ?
40. 40.📏 How many watts (W) is 4.4 kW?

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