Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 788 · 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 kilo-ohms (kΩ) is 1000 Ω? =
2. 2.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) voltage (d) current
3. 3.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
5. 5.📏 How many watts (W) is 1.2 kW?
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 How many watts (W) is 0.4 kW?
9. 9.True or false: the ammeter measures voltage. (a) False (b) True
10. 10.True or false: voltage is measured in volts (V). (a) False (b) True
11. 11.True or false: the voltmeter measures voltage. (a) False (b) True
12. 12.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
13. 13.📏 How many watts (W) is 5 kW?
14. 14.📏 How many milliamperes (mA) is 0.45 A?
15. 15.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
16. 16.📏 How many amperes (A) is 1400 mA? =
17. 17.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
18. 18.True or false: the ammeter measures current. (a) False (b) True
19. 19.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
20. 20.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
21. 21.📏 How many kilowatts (kW) is 1900 W? =
22. 22.True or false: power is measured in amperes (A). (a) False (b) True
23. 23.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
26. 26.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) the push of a cell (d) current
27. 27.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) how much a part resists (d) current
28. 28.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
29. 29.📏 How many watts (W) is 1.7 kW?
30. 30.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
31. 31.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
32. 32.True or false: the voltmeter is joined in series. (a) False (b) True
33. 33.True or false: current is measured in amperes (A). (a) True (b) False
34. 34.📏 How many watts (W) is 1.8 kW?
35. 35.True or false: energy used each second is measured in watts (W). (a) False (b) True
36. 36.📏 How many ohms (Ω) is 0.3 kΩ?
37. 37.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
38. 38.📏 How many kilowatts (kW) is 4600 W? =
39. 39.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) power (d) resistance
40. 40.📏 How many amperes (A) is 790 mA? =

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