Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 199 · 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 of these is measured in amperes (A)? (a) resistance (b) the flow of charge (c) the push of a cell (d) voltage
2. 2.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
7. 7.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 1000 (d) 100
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.📏 How many milliamperes (mA) is 1.14 A?
11. 11.📏 How many amperes (A) is 1520 mA? =
12. 12.📏 How many milliamperes (mA) is 1.37 A?
13. 13.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) how much a part resists (c) current (d) voltage
14. 14.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
15. 15.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
16. 16.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
17. 17.📏 How many amperes (A) is 1700 mA? =
18. 18.True or false: voltage is measured in amperes (A). (a) True (b) False
19. 19.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
20. 20.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) power (d) the push of a cell
21. 21.True or false: the ammeter measures current. (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
23. 23.📏 How many milliamperes (mA) is 0.21 A?
24. 24.True or false: the voltmeter measures voltage. (a) True (b) False
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the tap handle (d) the water tank lid
27. 27.📏 How many watts (W) is 0.3 kW?
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) energy used each second (d) current
29. 29.📏 How many kilowatts (kW) is 400 W? =
30. 30.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
31. 31.Which of these is measured in volts (V)? (a) current (b) voltage (c) energy used each second (d) how much a part resists
32. 32.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
33. 33.True or false: the push of a cell is measured in volts (V). (a) False (b) True
34. 34.True or false: the ammeter is joined in series. (a) True (b) False
35. 35.📏 How many milliamperes (mA) is 1.42 A?
36. 36.📏 How many amperes (A) is 500 mA? =
37. 37.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
38. 38.📏 How many milliamperes (mA) is 2.81 A?
39. 39.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
40. 40.📏 How many amperes (A) is 470 mA? =

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