Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 442 · 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 is joined in series. (a) True (b) False
2. 2.📏 How many milliamperes (mA) is 0.61 A?
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
5. 5.📏 How many ohms (Ω) is 0.2 kΩ?
6. 6.Which of these is measured in watts (W)? (a) current (b) power (c) resistance (d) how much a part resists
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
8. 8.📏 How many ohms (Ω) is 0.6 kΩ?
9. 9.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) power (d) the push of a cell
10. 10.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) voltage (d) how much a part resists
11. 11.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 10 (d) 1024
12. 12.📏 How many amperes (A) is 2170 mA? =
13. 13.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
14. 14.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) energy used each second (d) how much a part resists
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
16. 16.True or false: the ammeter measures voltage. (a) True (b) False
17. 17.True or false: the ammeter measures current. (a) False (b) True
18. 18.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
19. 19.📏 How many ohms (Ω) is 9.6 kΩ?
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) current (d) resistance
21. 21.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
23. 23.📏 How many amperes (A) is 1070 mA? =
24. 24.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
25. 25.True or false: the voltmeter measures current. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
27. 27.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) voltage (d) current
28. 28.📏 How many kilowatts (kW) is 650 W? =
29. 29.True or false: current is measured in amperes (A). (a) False (b) True
30. 30.True or false: power is measured in watts (W). (a) False (b) True
31. 31.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
32. 32.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
33. 33.📏 How many ohms (Ω) is 5.8 kΩ?
34. 34.📏 How many ohms (Ω) is 2.8 kΩ?
35. 35.📏 How many milliamperes (mA) is 0.83 A?
36. 36.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
37. 37.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
38. 38.📏 How many kilowatts (kW) is 5000 W? =
39. 39.True or false: resistance is measured in ohms (Ω). (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 9400 Ω? =

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