Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 644 · 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 milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
2. 2.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
3. 3.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) resistance (d) energy used each second
4. 4.📏 How many watts (W) is 0.1 kW?
5. 5.📏 How many amperes (A) is 600 mA? =
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) a narrow pipe (d) the flow of water
7. 7.📏 How many amperes (A) is 1400 mA? =
8. 8.True or false: the voltmeter is joined in series. (a) True (b) False
9. 9.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
10. 10.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) voltage (d) resistance
11. 11.True or false: resistance is measured in watts (W). (a) True (b) False
12. 12.True or false: the push of a cell is measured in volts (V). (a) True (b) False
13. 13.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) power (d) voltage
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.True or false: the voltmeter measures voltage. (a) False (b) True
16. 16.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
17. 17.📏 How many milliamperes (mA) is 2.87 A?
18. 18.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the water pressure (d) the flow of water
20. 20.Which of these is measured in watts (W)? (a) the push of a cell (b) resistance (c) power (d) voltage
21. 21.True or false: voltage is measured in watts (W). (a) False (b) True
22. 22.True or false: resistance is measured in amperes (A). (a) True (b) False
23. 23.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
24. 24.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
25. 25.📏 How many ohms (Ω) is 9.6 kΩ?
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.True or false: the ammeter is joined in series. (a) False (b) True
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 How many amperes (A) is 1770 mA? =
30. 30.📏 How many milliamperes (mA) is 0.32 A?
31. 31.📏 How many ohms (Ω) is 7.6 kΩ?
32. 32.📏 How many kilowatts (kW) is 1200 W? =
33. 33.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
34. 34.📏 How many ohms (Ω) is 5.8 kΩ?
35. 35.📏 How many kilowatts (kW) is 2350 W? =
36. 36.📏 How many amperes (A) is 1010 mA? =
37. 37.True or false: the ammeter measures current. (a) False (b) True
38. 38.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
39. 39.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
40. 40.📏 How many ohms (Ω) is 0.9 kΩ?

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