Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 979 · 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 ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 1000 (d) 100
2. 2.📏 How many amperes (A) is 1970 mA? =
3. 3.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
4. 4.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) power
5. 5.📏 How many amperes (A) is 2650 mA? =
6. 6.True or false: voltage is measured in volts (V). (a) False (b) True
7. 7.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
8. 8.📏 How many amperes (A) is 1510 mA? =
9. 9.Which of these is measured in volts (V)? (a) current (b) voltage (c) resistance (d) the flow of charge
10. 10.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
11. 11.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) current (d) resistance
12. 12.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
13. 13.📏 How many amperes (A) is 620 mA? =
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.True or false: the ammeter is joined in series. (a) False (b) True
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
20. 20.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
21. 21.📏 How many watts (W) is 0.1 kW?
22. 22.True or false: the ammeter measures voltage. (a) False (b) True
23. 23.📏 How many amperes (A) is 2770 mA? =
24. 24.True or false: power is measured in watts (W). (a) False (b) True
25. 25.True or false: resistance is measured in ohms (Ω). (a) False (b) True
26. 26.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
27. 27.True or false: current is measured in watts (W). (a) True (b) False
28. 28.📏 How many kilowatts (kW) is 250 W? =
29. 29.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
30. 30.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
31. 31.True or false: the voltmeter measures current. (a) True (b) False
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 How many milliamperes (mA) is 1.34 A?
34. 34.True or false: the ammeter measures current. (a) True (b) False
35. 35.Which of these is measured in volts (V)? (a) current (b) resistance (c) the push of a cell (d) energy used each second
36. 36.True or false: the voltmeter is joined across a part. (a) True (b) False
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
38. 38.📏 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
39. 39.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
40. 40.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) power (d) the push of a cell

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