Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 170 · 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 the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
2. 2.📏 How many amperes (A) is 220 mA? =
3. 3.True or false: the ammeter measures current. (a) False (b) True
4. 4.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) energy used each second (d) power
5. 5.📏 How many ohms (Ω) is 2.6 kΩ?
6. 6.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) energy used each second (d) voltage
7. 7.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
8. 8.📏 How many kilo-ohms (kΩ) is 4000 Ω? =
9. 9.Which of these is measured in amperes (A)? (a) voltage (b) current (c) the push of a cell (d) energy used each second
10. 10.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) how much a part resists (d) the push of a cell
11. 11.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) voltage (d) current
12. 12.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
13. 13.📏 How many ohms (Ω) is 2.3 kΩ?
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) a narrow pipe (d) the water pressure
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
16. 16.True or false: power is measured in watts (W). (a) False (b) True
17. 17.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 How many watts (W) is 1.4 kW?
19. 19.📏 How many amperes (A) is 2610 mA? =
20. 20.True or false: voltage is measured in volts (V). (a) True (b) False
21. 21.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
22. 22.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
23. 23.True or false: resistance is measured in volts (V). (a) True (b) False
24. 24.📏 How many amperes (A) is 1980 mA? =
25. 25.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.True or false: current is measured in ohms (Ω). (a) True (b) False
28. 28.📏 Which unit measures energy used each second? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
29. 29.📏 How many kilowatts (kW) is 250 W? =
30. 30.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) voltage
31. 31.📏 How many watts (W) is 0.4 kW?
32. 32.📏 How many milliamperes (mA) is 0.87 A?
33. 33.📏 How many watts (W) is 1.5 kW?
34. 34.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) voltage (d) current
35. 35.📏 How many milliamperes (mA) is 1.92 A?
36. 36.📏 How many ohms (Ω) is 8.9 kΩ?
37. 37.📏 How many amperes (A) is 2570 mA? =
38. 38.📏 How many milliamperes (mA) is 1.02 A?
39. 39.📏 How many milliamperes (mA) is 0.98 A?
40. 40.True or false: the voltmeter measures current. (a) True (b) False

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