Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 961 · 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 kilo-ohms (kΩ) is 4300 Ω? =
2. 2.Which of these is measured in watts (W)? (a) how much a part resists (b) the push of a cell (c) power (d) current
3. 3.True or false: the ammeter is joined in series. (a) True (b) False
4. 4.True or false: the voltmeter measures voltage. (a) False (b) True
5. 5.True or false: current is measured in amperes (A). (a) True (b) False
6. 6.True or false: the voltmeter measures current. (a) True (b) False
7. 7.True or false: the push of a cell is measured in volts (V). (a) True (b) False
8. 8.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.📏 How many milliamperes (mA) is 0.41 A?
10. 10.True or false: the ammeter measures voltage. (a) True (b) False
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
13. 13.📏 How many watts (W) is 0.4 kW?
14. 14.True or false: the ammeter measures current. (a) True (b) False
15. 15.📏 How many milliamperes (mA) is 0.3 A?
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
17. 17.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) current (d) power
18. 18.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
19. 19.📏 How many kilowatts (kW) is 3700 W? =
20. 20.📏 How many amperes (A) is 2260 mA? =
21. 21.True or false: voltage is measured in volts (V). (a) True (b) False
22. 22.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) resistance (d) power
23. 23.True or false: the voltmeter is joined in series. (a) True (b) False
24. 24.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
25. 25.📏 How many amperes (A) is 30 mA? =
26. 26.📏 How many kilowatts (kW) is 1150 W? =
27. 27.True or false: the voltmeter is joined across a part. (a) True (b) False
28. 28.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
29. 29.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
30. 30.📏 How many ohms (Ω) is 2 kΩ?
31. 31.📏 How many watts (W) is 0.5 kW?
32. 32.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
35. 35.True or false: the ammeter is joined across a part. (a) True (b) False
36. 36.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) how much a part resists (d) the flow of charge
37. 37.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
38. 38.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) the push of a cell (d) resistance
39. 39.True or false: energy used each second is measured in watts (W). (a) False (b) True
40. 40.📏 How many milliamperes (mA) is 0.43 A?

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