Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 431 · 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 measures voltage. (a) True (b) False
2. 2.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
3. 3.True or false: energy used each second is measured in watts (W). (a) True (b) False
4. 4.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
5. 5.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) power (d) the push of a cell
6. 6.📏 How many kilo-ohms (kΩ) is 900 Ω? =
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.True or false: the voltmeter measures current. (a) True (b) False
10. 10.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) current (d) voltage
11. 11.True or false: voltage is measured in ohms (Ω). (a) True (b) False
12. 12.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
13. 13.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
14. 14.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) the push of a cell (d) how much a part resists
15. 15.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
16. 16.📏 How many milliamperes (mA) is 1.06 A?
17. 17.📏 How many amperes (A) is 1440 mA? =
18. 18.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
19. 19.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
20. 20.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) energy used each second (d) the flow of charge
21. 21.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) the flow of charge (d) voltage
22. 22.📏 How many amperes (A) is 890 mA? =
23. 23.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) voltage (d) the flow of charge
24. 24.📏 How many amperes (A) is 320 mA? =
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
26. 26.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
27. 27.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
28. 28.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
29. 29.📏 How many milliamperes (mA) is 0.02 A?
30. 30.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
31. 31.True or false: the flow of charge is measured in volts (V). (a) True (b) False
32. 32.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
33. 33.True or false: current is measured in volts (V). (a) False (b) True
34. 34.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
35. 35.📏 How many milliamperes (mA) is 0.93 A?
36. 36.True or false: the voltmeter is joined in series. (a) False (b) True
37. 37.📏 How many milliamperes (mA) is 2.8 A?
38. 38.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
39. 39.True or false: current is measured in watts (W). (a) True (b) False
40. 40.📏 How many ohms (Ω) is 0.2 kΩ?

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