Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 220 · 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.📏 How many kilo-ohms (kΩ) is 4600 Ω? =
2. 2.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
3. 3.📏 How many milliamperes (mA) is 0.77 A?
4. 4.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) resistance (d) energy used each second
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
6. 6.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
7. 7.True or false: resistance is measured in ohms (Ω). (a) True (b) False
8. 8.📏 How many kilo-ohms (kΩ) is 9400 Ω? =
9. 9.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
10. 10.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
11. 11.📏 How many amperes (A) is 1400 mA? =
12. 12.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) current (d) power
13. 13.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) power
14. 14.True or false: power is measured in watts (W). (a) True (b) False
15. 15.True or false: the ammeter measures voltage. (a) True (b) False
16. 16.📏 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
17. 17.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
19. 19.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
20. 20.True or false: current is measured in watts (W). (a) False (b) True
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
22. 22.📏 How many amperes (A) is 540 mA? =
23. 23.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) power
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
26. 26.True or false: voltage is measured in ohms (Ω). (a) True (b) False
27. 27.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) energy used each second (d) current
28. 28.📏 How many milliamperes (mA) is 1.97 A?
29. 29.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) the flow of charge (c) current (d) resistance
30. 30.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
31. 31.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
32. 32.True or false: the push of a cell is measured in volts (V). (a) True (b) False
33. 33.📏 How many watts (W) is 0.6 kW?
34. 34.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
35. 35.📏 How many kilowatts (kW) is 4650 W? =
36. 36.📏 How many kilowatts (kW) is 4350 W? =
37. 37.True or false: how much a part resists is measured in volts (V). (a) True (b) False
38. 38.📏 How many watts (W) is 1.6 kW?
39. 39.True or false: the voltmeter is joined in series. (a) False (b) True
40. 40.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)

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