Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 906 · 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 amperes (A) is 1920 mA? =
2. 2.📏 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
3. 3.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
4. 4.📏 How many ohms (Ω) is 10 kΩ?
5. 5.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) the push of a cell (d) how much a part resists
6. 6.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.📏 How many milliamperes (mA) is 0.42 A?
8. 8.📏 How many kilowatts (kW) is 250 W? =
9. 9.📏 How many amperes (A) is 540 mA? =
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.True or false: voltage is measured in ohms (Ω). (a) False (b) True
12. 12.📏 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
13. 13.True or false: current is measured in amperes (A). (a) False (b) True
14. 14.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
15. 15.📏 How many milliamperes (mA) is 1.81 A?
16. 16.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
17. 17.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
19. 19.True or false: voltage is measured in volts (V). (a) True (b) False
20. 20.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
21. 21.📏 How many milliamperes (mA) is 1.02 A?
22. 22.📏 How many amperes (A) is 550 mA? =
23. 23.True or false: power is measured in amperes (A). (a) True (b) False
24. 24.True or false: the ammeter is joined across a part. (a) True (b) False
25. 25.📏 How many ohms (Ω) is 6 kΩ?
26. 26.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) current (d) the push of a cell
27. 27.True or false: the voltmeter measures current. (a) True (b) False
28. 28.📏 How many watts (W) is 2.3 kW?
29. 29.True or false: the push of a cell is measured in watts (W). (a) False (b) True
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
31. 31.Which of these is measured in amperes (A)? (a) power (b) voltage (c) energy used each second (d) current
32. 32.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) power (d) voltage
33. 33.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
34. 34.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) power (d) how much a part resists
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
36. 36.📏 How many milliamperes (mA) is 0.16 A?
37. 37.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
38. 38.📏 How many watts (W) is 0.8 kW?
39. 39.Which of these is measured in volts (V)? (a) power (b) the push of a cell (c) the flow of charge (d) resistance
40. 40.📏 How many ohms (Ω) is 2.7 kΩ?

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