Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 265 · 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) is 0.37 A?
2. 2.📏 How many ohms (Ω) is 2 kΩ?
3. 3.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
5. 5.📏 How many amperes (A) is 2510 mA? =
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.True or false: resistance is measured in watts (W). (a) False (b) True
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
9. 9.True or false: the ammeter is joined in series. (a) False (b) True
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
12. 12.True or false: the ammeter measures current. (a) False (b) True
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.📏 How many amperes (A) is 2010 mA? =
15. 15.Which of these is measured in volts (V)? (a) current (b) power (c) resistance (d) voltage
16. 16.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
17. 17.📏 How many kilowatts (kW) is 3350 W? =
18. 18.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) the flow of charge (d) energy used each second
19. 19.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) current (d) resistance
20. 20.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
21. 21.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
22. 22.📏 How many milliamperes (mA) is 1.21 A?
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
25. 25.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.True or false: the flow of charge is measured in watts (W). (a) True (b) False
27. 27.True or false: resistance is measured in volts (V). (a) True (b) False
28. 28.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) resistance
31. 31.📏 How many kilowatts (kW) is 2050 W? =
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
34. 34.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
35. 35.📏 How many amperes (A) is 140 mA? =
36. 36.📏 How many watts (W) is 5 kW?
37. 37.📏 How many kilo-ohms (kΩ) is 700 Ω? =
38. 38.True or false: the voltmeter measures voltage. (a) True (b) False
39. 39.True or false: power is measured in watts (W). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe

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