Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 653 · 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 kilowatts (kW) is 3450 W? =
2. 2.📏 How many milliamperes (mA) is 0.01 A?
3. 3.📏 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
4. 4.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
5. 5.📏 How many ohms (Ω) is 9.1 kΩ?
6. 6.True or false: the voltmeter measures current. (a) False (b) True
7. 7.📏 How many amperes (A) is 1540 mA? =
8. 8.True or false: energy used each second is measured in watts (W). (a) True (b) False
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.True or false: resistance is measured in ohms (Ω). (a) False (b) True
11. 11.📏 How many milliamperes (mA) is 0.48 A?
12. 12.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) resistance
13. 13.📏 How many amperes (A) is 910 mA? =
14. 14.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
15. 15.📏 How many kilowatts (kW) is 500 W? =
16. 16.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) power (d) how much a part resists
17. 17.Which of these is measured in amperes (A)? (a) voltage (b) the push of a cell (c) how much a part resists (d) current
18. 18.📏 How many ohms (Ω) is 5.4 kΩ?
19. 19.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
21. 21.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
22. 22.True or false: voltage is measured in watts (W). (a) False (b) True
23. 23.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
24. 24.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
25. 25.📏 How many ohms (Ω) is 9.3 kΩ?
26. 26.Which of these is measured in watts (W)? (a) power (b) voltage (c) the flow of charge (d) current
27. 27.True or false: how much a part resists is measured in watts (W). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
31. 31.True or false: the ammeter is joined in series. (a) True (b) False
32. 32.📏 How many kilowatts (kW) is 600 W? =
33. 33.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
34. 34.📏 How many ohms (Ω) is 6.2 kΩ?
35. 35.📏 How many amperes (A) is 2060 mA? =
36. 36.📏 How many milliamperes (mA) is 2.18 A?
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
39. 39.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) energy used each second (d) resistance
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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