Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 473 · 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) is 1.63 A?
2. 2.Which of these is measured in watts (W)? (a) energy used each second (b) current (c) resistance (d) voltage
3. 3.📏 How many ohms (Ω) is 2.5 kΩ?
4. 4.Which of these is measured in amperes (A)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
5. 5.True or false: the ammeter is joined in series. (a) False (b) True
6. 6.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) current (d) power
7. 7.True or false: the voltmeter measures current. (a) True (b) False
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
9. 9.📏 Which unit measures resistance? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 How many kilo-ohms (kΩ) is 8300 Ω? =
11. 11.📏 How many amperes (A) is 2320 mA? =
12. 12.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
13. 13.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
17. 17.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
18. 18.📏 How many ohms (Ω) is 4.2 kΩ?
19. 19.True or false: resistance is measured in amperes (A). (a) True (b) False
20. 20.📏 How many milliamperes (mA) is 0.5 A?
21. 21.True or false: the push of a cell is measured in amperes (A). (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
23. 23.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
24. 24.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.📏 How many amperes (A) is 1080 mA? =
28. 28.True or false: voltage is measured in amperes (A). (a) True (b) False
29. 29.📏 How many kilowatts (kW) is 4150 W? =
30. 30.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) current (d) the push of a cell
31. 31.True or false: power is measured in watts (W). (a) True (b) False
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) current (d) power
33. 33.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
34. 34.📏 How many amperes (A) is 2290 mA? =
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
36. 36.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) energy used each second (d) voltage
37. 37.📏 How many amperes (A) is 820 mA? =
38. 38.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
39. 39.Which of these is measured in amperes (A)? (a) voltage (b) how much a part resists (c) power (d) the flow of charge
40. 40.True or false: the voltmeter is joined across a part. (a) True (b) False

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