Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 333 · 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.📏 Which unit measures the push of a cell? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
2. 2.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
3. 3.📏 How many amperes (A) is 40 mA? =
4. 4.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
5. 5.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
6. 6.True or false: the ammeter is joined in series. (a) False (b) True
7. 7.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) the flow of charge (d) energy used each second
8. 8.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
9. 9.📏 How many kilowatts (kW) is 2500 W? =
10. 10.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
11. 11.📏 How many watts (W) is 0.2 kW?
12. 12.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) current (d) the flow of charge
13. 13.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
14. 14.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
15. 15.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
16. 16.True or false: the voltmeter measures voltage. (a) False (b) True
17. 17.📏 How many amperes (A) is 450 mA? =
18. 18.📏 How many watts (W) is 4.7 kW?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.📏 How many milliamperes (mA) is 2.21 A?
21. 21.True or false: the push of a cell is measured in volts (V). (a) False (b) True
22. 22.True or false: power is measured in amperes (A). (a) True (b) False
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
25. 25.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
26. 26.True or false: the flow of charge is measured in volts (V). (a) True (b) False
27. 27.True or false: the ammeter measures current. (a) True (b) False
28. 28.📏 How many watts (W) is 1.5 kW?
29. 29.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
30. 30.📏 How many milliamperes (mA) is 0.84 A?
31. 31.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) energy used each second (d) voltage
32. 32.📏 How many kilowatts (kW) is 3000 W? =
33. 33.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
34. 34.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
35. 35.📏 How many amperes (A) is 140 mA? =
36. 36.📏 How many watts (W) is 1.2 kW?
37. 37.Which of these is measured in ohms (Ω)? (a) voltage (b) how much a part resists (c) the flow of charge (d) power
38. 38.📏 How many amperes (A) is 1830 mA? =
39. 39.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
40. 40.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000

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