Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 911 · 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 2230 mA? =
2. 2.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
3. 3.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
5. 5.📏 How many watts (W) is 0.7 kW?
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
7. 7.📏 How many kilo-ohms (kΩ) is 8200 Ω? =
8. 8.📏 Which unit measures resistance? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
9. 9.📏 How many kilo-ohms (kΩ) is 7900 Ω? =
10. 10.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
11. 11.True or false: the voltmeter measures current. (a) False (b) True
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
14. 14.📏 How many kilo-ohms (kΩ) is 7200 Ω? =
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.True or false: the voltmeter is joined in series. (a) False (b) True
18. 18.📏 How many kilo-ohms (kΩ) is 1000 Ω? =
19. 19.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
20. 20.Which of these is measured in ohms (Ω)? (a) voltage (b) energy used each second (c) how much a part resists (d) the flow of charge
21. 21.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.True or false: the push of a cell is measured in watts (W). (a) False (b) True
24. 24.True or false: voltage is measured in watts (W). (a) False (b) True
25. 25.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) a bigger tank
26. 26.Which of these is measured in watts (W)? (a) resistance (b) voltage (c) how much a part resists (d) energy used each second
27. 27.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
28. 28.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
29. 29.📏 How many ohms (Ω) is 6.3 kΩ?
30. 30.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
31. 31.📏 How many amperes (A) is 60 mA? =
32. 32.📏 How many milliamperes (mA) is 1.41 A?
33. 33.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) resistance (d) the push of a cell
34. 34.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) voltage (d) how much a part resists
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
37. 37.📏 How many kilowatts (kW) is 650 W? =
38. 38.📏 How many milliamperes (mA) is 2.67 A?
39. 39.📏 How many amperes (A) is 690 mA? =
40. 40.📏 How many watts (W) is 2.6 kW?

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