Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 414 · 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 watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) current
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 100 (d) 10
3. 3.📏 How many watts (W) is 3.6 kW?
4. 4.📏 How many ohms (Ω) is 1.3 kΩ?
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
8. 8.📏 How many milliamperes (mA) is 0.97 A?
9. 9.Which of these is measured in watts (W)? (a) resistance (b) current (c) power (d) voltage
10. 10.📏 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
11. 11.📏 How many milliamperes (mA) is 1.83 A?
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 How many amperes (A) is 1200 mA? =
14. 14.📏 How many watts (W) is 4.2 kW?
15. 15.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
16. 16.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) current (d) the push of a cell
17. 17.True or false: the flow of charge is measured in volts (V). (a) True (b) False
18. 18.True or false: resistance is measured in ohms (Ω). (a) False (b) True
19. 19.True or false: the ammeter measures voltage. (a) False (b) True
20. 20.True or false: voltage is measured in volts (V). (a) True (b) False
21. 21.📏 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
22. 22.True or false: the voltmeter measures voltage. (a) True (b) False
23. 23.📏 How many milliamperes (mA) is 2.31 A?
24. 24.📏 How many watts (W) is 1.9 kW?
25. 25.📏 How many ohms (Ω) is 9.9 kΩ?
26. 26.True or false: energy used each second is measured in volts (V). (a) True (b) False
27. 27.📏 How many watts (W) is 4.1 kW?
28. 28.📏 How many ohms (Ω) is 7.9 kΩ?
29. 29.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
30. 30.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) the push of a cell
31. 31.True or false: the push of a cell is measured in volts (V). (a) True (b) False
32. 32.📏 How many kilo-ohms (kΩ) is 1700 Ω? =
33. 33.📏 How many amperes (A) is 1160 mA? =
34. 34.True or false: the voltmeter is joined in series. (a) True (b) False
35. 35.True or false: resistance is measured in watts (W). (a) True (b) False
36. 36.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
37. 37.📏 How many ohms (Ω) is 3.6 kΩ?
38. 38.📏 How many watts (W) is 1.5 kW?
39. 39.📏 How many ohms (Ω) is 9.7 kΩ?
40. 40.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) the push of a cell

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