Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 966 · 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 unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) the push of a cell (d) energy used each second
3. 3.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) energy used each second (d) the push of a cell
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
5. 5.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
6. 6.📏 How many amperes (A) is 2130 mA? =
7. 7.Which of these is measured in amperes (A)? (a) power (b) current (c) how much a part resists (d) voltage
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 How many amperes (A) is 1810 mA? =
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
11. 11.True or false: the ammeter measures current. (a) False (b) True
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) current (d) power
14. 14.📏 How many milliamperes (mA) is 1.3 A?
15. 15.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
16. 16.True or false: current is measured in volts (V). (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) power (b) resistance (c) how much a part resists (d) voltage
18. 18.📏 How many amperes (A) is 2050 mA? =
19. 19.📏 How many kilowatts (kW) is 4300 W? =
20. 20.📏 How many kilo-ohms (kΩ) is 500 Ω? =
21. 21.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
22. 22.📏 How many ohms (Ω) is 9.3 kΩ?
23. 23.📏 How many watts (W) is 0.3 kW?
24. 24.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
25. 25.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
26. 26.True or false: the ammeter is joined across a part. (a) False (b) True
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
30. 30.📏 How many milliamperes (mA) is 1.47 A?
31. 31.True or false: resistance is measured in watts (W). (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 2450 W? =
33. 33.📏 How many amperes (A) is 1340 mA? =
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.📏 How many amperes (A) is 790 mA? =
36. 36.📏 How many amperes (A) is 1670 mA? =
37. 37.📏 How many amperes (A) is 2730 mA? =
38. 38.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
39. 39.True or false: the ammeter is joined in series. (a) False (b) True
40. 40.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) voltage (d) resistance

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