Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 404 · 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) False (b) True
2. 2.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) the flow of charge (d) current
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
4. 4.Which of these is measured in amperes (A)? (a) power (b) voltage (c) resistance (d) the flow of charge
5. 5.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
7. 7.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) how much a part resists (d) resistance
8. 8.📏 How many amperes (A) is 1420 mA? =
9. 9.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
10. 10.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
11. 11.📏 How many milliamperes (mA) is 1.86 A?
12. 12.📏 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
13. 13.📏 How many watts (W) is 1.4 kW?
14. 14.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
15. 15.📏 How many milliamperes (mA) is 2.07 A?
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
17. 17.📏 How many kilowatts (kW) is 3500 W? =
18. 18.📏 How many milliamperes (mA) is 0.67 A?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
21. 21.True or false: the ammeter measures current. (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.📏 How many ohms (Ω) is 2 kΩ?
24. 24.True or false: resistance is measured in volts (V). (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
26. 26.True or false: voltage is measured in ohms (Ω). (a) False (b) True
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
28. 28.Which of these is measured in watts (W)? (a) current (b) the push of a cell (c) power (d) how much a part resists
29. 29.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
30. 30.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
31. 31.📏 How many amperes (A) is 2920 mA? =
32. 32.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
33. 33.True or false: the voltmeter is joined across a part. (a) False (b) True
34. 34.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) how much a part resists (d) power
35. 35.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
36. 36.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
37. 37.📏 How many watts (W) is 1.5 kW?
38. 38.True or false: the voltmeter measures voltage. (a) True (b) False
39. 39.📏 How many milliamperes (mA) is 1.69 A?
40. 40.True or false: the ammeter is joined in series. (a) False (b) True

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