Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 213 · 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 ohms (Ω) is 7.1 kΩ?
2. 2.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
3. 3.True or false: current is measured in amperes (A). (a) False (b) True
4. 4.📏 How many kilowatts (kW) is 4650 W? =
5. 5.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) the push of a cell (d) current
6. 6.📏 How many milliamperes (mA) is 0.17 A?
7. 7.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) energy used each second (d) how much a part resists
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
10. 10.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
11. 11.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
12. 12.📏 How many watts (W) is 0.5 kW?
13. 13.True or false: the voltmeter is joined in series. (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
15. 15.📏 How many watts (W) is 0.8 kW?
16. 16.True or false: power is measured in amperes (A). (a) True (b) False
17. 17.Which of these is measured in volts (V)? (a) voltage (b) resistance (c) energy used each second (d) current
18. 18.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
19. 19.📏 How many milliamperes (mA) is 0.24 A?
20. 20.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.True or false: the ammeter measures voltage. (a) False (b) True
24. 24.📏 How many kilo-ohms (kΩ) is 9200 Ω? =
25. 25.📏 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
26. 26.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
27. 27.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
28. 28.True or false: resistance is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
30. 30.True or false: power is measured in volts (V). (a) True (b) False
31. 31.Which of these is measured in watts (W)? (a) power (b) resistance (c) how much a part resists (d) voltage
32. 32.📏 How many watts (W) is 2.2 kW?
33. 33.📏 How many amperes (A) is 920 mA? =
34. 34.📏 How many milliamperes (mA) is 0.59 A?
35. 35.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) the pipe colour
36. 36.📏 How many ohms (Ω) is 1.4 kΩ?
37. 37.📏 How many ohms (Ω) is 2.3 kΩ?
38. 38.📏 How many kilowatts (kW) is 3400 W? =
39. 39.📏 How many kilowatts (kW) is 3000 W? =
40. 40.Which of these is measured in volts (V)? (a) current (b) power (c) energy used each second (d) the push of a cell

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