Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 429 · 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.Which of these is measured in volts (V)? (a) resistance (b) power (c) how much a part resists (d) the push of a cell
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.📏 How many milliamperes (mA) is 0.05 A?
5. 5.📏 How many kilowatts (kW) is 150 W? =
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
9. 9.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
10. 10.True or false: current is measured in amperes (A). (a) True (b) False
11. 11.📏 How many kilowatts (kW) is 1150 W? =
12. 12.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
13. 13.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
16. 16.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
17. 17.📏 How many watts (W) is 0.8 kW?
18. 18.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
19. 19.📏 How many ohms (Ω) is 9.9 kΩ?
20. 20.True or false: the ammeter is joined in series. (a) False (b) True
21. 21.Which of these is measured in watts (W)? (a) voltage (b) power (c) how much a part resists (d) the flow of charge
22. 22.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) energy used each second (d) the flow of charge
23. 23.📏 How many milliamperes (mA) is 1.23 A?
24. 24.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
27. 27.📏 How many watts (W) is 0.5 kW?
28. 28.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
29. 29.True or false: the flow of charge is measured in watts (W). (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 3150 W? =
31. 31.📏 How many ohms (Ω) is 9 kΩ?
32. 32.📏 How many amperes (A) is 2410 mA? =
33. 33.True or false: the ammeter measures voltage. (a) False (b) True
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 60 (d) 100
35. 35.📏 How many ohms (Ω) is 3 kΩ?
36. 36.📏 How many ohms (Ω) is 5.3 kΩ?
37. 37.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
38. 38.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
39. 39.📏 How many watts (W) is 4.8 kW?
40. 40.📏 How many kilowatts (kW) is 950 W? =

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