Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 42 · 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 of these is measured in amperes (A)? (a) current (b) energy used each second (c) the push of a cell (d) resistance
2. 2.True or false: power is measured in watts (W). (a) True (b) False
3. 3.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
4. 4.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 10 (d) 1000
6. 6.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) energy used each second (d) resistance
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
9. 9.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
10. 10.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
11. 11.📏 How many amperes (A) is 1520 mA? =
12. 12.Which of these is measured in amperes (A)? (a) the push of a cell (b) resistance (c) how much a part resists (d) the flow of charge
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.📏 How many watts (W) is 0.2 kW?
15. 15.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) resistance
16. 16.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
18. 18.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) energy used each second
19. 19.True or false: how much a part resists is measured in watts (W). (a) False (b) True
20. 20.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
21. 21.True or false: current is measured in amperes (A). (a) True (b) False
22. 22.True or false: the ammeter measures voltage. (a) True (b) False
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
24. 24.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
25. 25.True or false: the voltmeter is joined in series. (a) False (b) True
26. 26.True or false: the ammeter measures current. (a) True (b) False
27. 27.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
28. 28.True or false: how much a part resists is measured in volts (V). (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) the flow of charge (d) current
30. 30.📏 How many watts (W) is 4.8 kW?
31. 31.📏 How many milliamperes (mA) is 2.84 A?
32. 32.True or false: voltage is measured in volts (V). (a) False (b) True
33. 33.📏 How many watts (W) is 3.6 kW?
34. 34.📏 How many ohms (Ω) is 2 kΩ?
35. 35.📏 How many kilowatts (kW) is 4200 W? =
36. 36.True or false: the ammeter is joined in series. (a) False (b) True
37. 37.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
38. 38.📏 How many amperes (A) is 60 mA? =
39. 39.📏 How many kilowatts (kW) is 2600 W? =
40. 40.📏 How many kilowatts (kW) is 3500 W? =

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