Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 970 · 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.True or false: the ammeter measures voltage. (a) True (b) False
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
3. 3.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
4. 4.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) power
5. 5.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) current (d) voltage
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the pipe colour (d) the water pressure
8. 8.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
10. 10.True or false: voltage is measured in amperes (A). (a) False (b) True
11. 11.True or false: energy used each second is measured in watts (W). (a) True (b) False
12. 12.📏 How many ohms (Ω) is 1.4 kΩ?
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.📏 How many amperes (A) is 340 mA? =
16. 16.📏 How many amperes (A) is 730 mA? =
17. 17.📏 How many amperes (A) is 440 mA? =
18. 18.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
19. 19.📏 How many milliamperes (mA) is 1.96 A?
20. 20.📏 How many amperes (A) is 360 mA? =
21. 21.True or false: the push of a cell is measured in volts (V). (a) True (b) False
22. 22.📏 How many amperes (A) is 1090 mA? =
23. 23.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) current (d) voltage
24. 24.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) power (d) the push of a cell
25. 25.📏 How many watts (W) is 4.7 kW?
26. 26.📏 How many milliamperes (mA) is 0.71 A?
27. 27.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
28. 28.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
29. 29.📏 How many amperes (A) is 2280 mA? =
30. 30.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) voltage (d) how much a part resists
31. 31.📏 How many watts (W) is 1.8 kW?
32. 32.📏 How many kilowatts (kW) is 2950 W? =
33. 33.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
34. 34.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
35. 35.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
36. 36.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
37. 37.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
38. 38.📏 How many milliamperes (mA) is 1.15 A?
39. 39.📏 How many milliamperes (mA) is 2.68 A?
40. 40.📏 How many watts (W) is 5 kW?

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