Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 35 · 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) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
2. 2.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the push of a cell (d) the flow of charge
3. 3.📏 How many kilowatts (kW) is 4700 W? =
4. 4.📏 How many amperes (A) is 2150 mA? =
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 10 (c) 100 (d) 1024
6. 6.Which of these is measured in amperes (A)? (a) current (b) resistance (c) power (d) energy used each second
7. 7.📏 How many watts (W) is 4.6 kW?
8. 8.Which of these is measured in volts (V)? (a) voltage (b) current (c) resistance (d) how much a part resists
9. 9.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
10. 10.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
11. 11.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) the pipe colour
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) voltage (c) the flow of charge (d) energy used each second
13. 13.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
14. 14.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
15. 15.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
16. 16.📏 How many kilo-ohms (kΩ) is 700 Ω? =
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
18. 18.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
19. 19.📏 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
20. 20.True or false: the ammeter measures current. (a) True (b) False
21. 21.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) voltage (d) resistance
22. 22.True or false: how much a part resists is measured in amperes (A). (a) True (b) False
23. 23.True or false: the push of a cell is measured in volts (V). (a) False (b) True
24. 24.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
25. 25.True or false: the ammeter is joined across a part. (a) True (b) False
26. 26.📏 How many ohms (Ω) is 6.2 kΩ?
27. 27.True or false: current is measured in volts (V). (a) True (b) False
28. 28.📏 How many milliamperes (mA) is 1.78 A?
29. 29.True or false: the push of a cell is measured in watts (W). (a) True (b) False
30. 30.📏 How many milliamperes (mA) is 1.59 A?
31. 31.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
32. 32.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
33. 33.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
34. 34.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) current (d) the push of a cell
35. 35.📏 How many kilowatts (kW) is 2750 W? =
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
37. 37.📏 How many watts (W) is 2.6 kW?
38. 38.📏 How many amperes (A) is 1110 mA? =
39. 39.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) energy used each second
40. 40.📏 How many ohms (Ω) is 5.1 kΩ?

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