Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 491 · 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: voltage is measured in volts (V). (a) False (b) True
2. 2.📏 How many watts (W) is 2.6 kW?
3. 3.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
4. 4.📏 How many amperes (A) is 2440 mA? =
5. 5.True or false: the ammeter measures current. (a) False (b) True
6. 6.True or false: resistance is measured in amperes (A). (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the push of a cell (c) voltage (d) resistance
8. 8.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.📏 How many watts (W) is 2.8 kW?
10. 10.True or false: the voltmeter measures voltage. (a) False (b) True
11. 11.Which of these is measured in watts (W)? (a) the flow of charge (b) the push of a cell (c) energy used each second (d) how much a part resists
12. 12.Which of these is measured in amperes (A)? (a) the push of a cell (b) the flow of charge (c) power (d) how much a part resists
13. 13.📏 How many watts (W) is 1 kW?
14. 14.📏 How many kilowatts (kW) is 3800 W? =
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 How many amperes (A) is 540 mA? =
17. 17.True or false: the voltmeter is joined across a part. (a) True (b) False
18. 18.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
19. 19.📏 How many milliamperes (mA) is 1.91 A?
20. 20.True or false: the flow of charge is measured in volts (V). (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
22. 22.True or false: the ammeter is joined in series. (a) False (b) True
23. 23.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
25. 25.📏 How many amperes (A) is 150 mA? =
26. 26.Which of these is measured in amperes (A)? (a) energy used each second (b) current (c) how much a part resists (d) resistance
27. 27.📏 How many watts (W) is 0.6 kW?
28. 28.📏 How many watts (W) is 0.4 kW?
29. 29.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
30. 30.📏 How many amperes (A) is 2530 mA? =
31. 31.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
32. 32.📏 How many ohms (Ω) is 6.9 kΩ?
33. 33.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
34. 34.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) the push of a cell (d) power
35. 35.Which of these is measured in volts (V)? (a) current (b) resistance (c) power (d) voltage
36. 36.📏 How many milliamperes (mA) is 1.85 A?
37. 37.True or false: the ammeter measures voltage. (a) False (b) True
38. 38.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
39. 39.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
40. 40.📏 How many ohms (Ω) is 6.5 kΩ?

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