Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 629 · 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 voltmeter measures voltage. (a) False (b) True
2. 2.True or false: energy used each second is measured in watts (W). (a) False (b) True
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
5. 5.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
6. 6.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
7. 7.Which of these is measured in volts (V)? (a) power (b) how much a part resists (c) resistance (d) voltage
8. 8.📏 How many amperes (A) is 2570 mA? =
9. 9.📏 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
10. 10.📏 How many ohms (Ω) is 5.7 kΩ?
11. 11.📏 How many milliamperes (mA) is 3 A?
12. 12.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) power (d) the push of a cell
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.True or false: the ammeter measures voltage. (a) True (b) False
15. 15.📏 How many milliamperes (mA) is 1.9 A?
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) power
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) the flow of charge (d) power
18. 18.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
19. 19.📏 How many watts (W) is 0.8 kW?
20. 20.📏 How many amperes (A) is 820 mA? =
21. 21.Which of these is measured in watts (W)? (a) current (b) resistance (c) the push of a cell (d) energy used each second
22. 22.True or false: current is measured in amperes (A). (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 How many amperes (A) is 1070 mA? =
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
26. 26.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) current
27. 27.📏 How many watts (W) is 1.2 kW?
28. 28.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
29. 29.📏 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
30. 30.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
31. 31.True or false: current is measured in ohms (Ω). (a) False (b) True
32. 32.📏 Which unit measures energy used each second? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
33. 33.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) the push of a cell (d) power
34. 34.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
35. 35.📏 How many kilowatts (kW) is 1500 W? =
36. 36.True or false: the push of a cell is measured in volts (V). (a) True (b) False
37. 37.📏 How many kilowatts (kW) is 3550 W? =
38. 38.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
39. 39.📏 How many ohms (Ω) is 5.5 kΩ?
40. 40.True or false: resistance is measured in ohms (Ω). (a) False (b) True

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