Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 678 · 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 milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
2. 2.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.True or false: voltage is measured in amperes (A). (a) True (b) False
4. 4.True or false: the ammeter measures voltage. (a) True (b) False
5. 5.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) the push of a cell (d) how much a part resists
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 How many amperes (A) is 440 mA? =
8. 8.True or false: voltage is measured in volts (V). (a) False (b) True
9. 9.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) the flow of charge (d) resistance
10. 10.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) the flow of charge (d) power
11. 11.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
12. 12.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
13. 13.📏 How many kilo-ohms (kΩ) is 600 Ω? =
14. 14.📏 How many amperes (A) is 450 mA? =
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
16. 16.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
17. 17.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) energy used each second (d) voltage
18. 18.📏 How many milliamperes (mA) is 2.18 A?
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
21. 21.True or false: power is measured in volts (V). (a) True (b) False
22. 22.📏 How many ohms (Ω) is 3.9 kΩ?
23. 23.📏 How many ohms (Ω) is 0.9 kΩ?
24. 24.📏 How many watts (W) is 0.1 kW?
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
26. 26.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) energy used each second
27. 27.📏 How many watts (W) is 0.4 kW?
28. 28.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
29. 29.True or false: the ammeter measures current. (a) True (b) False
30. 30.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
32. 32.📏 How many kilowatts (kW) is 4350 W? =
33. 33.True or false: power is measured in amperes (A). (a) False (b) True
34. 34.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) voltage (d) the flow of charge
35. 35.True or false: the ammeter is joined across a part. (a) True (b) False
36. 36.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
37. 37.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
38. 38.📏 How many amperes (A) is 240 mA? =
39. 39.True or false: the voltmeter measures current. (a) True (b) False
40. 40.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024

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