Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 292 · 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 amperes (A) is 150 mA? =
2. 2.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) power (d) resistance
3. 3.📏 How many kilowatts (kW) is 950 W? =
4. 4.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
5. 5.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) current (d) how much a part resists
6. 6.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.True or false: voltage is measured in watts (W). (a) False (b) True
10. 10.📏 How many kilowatts (kW) is 3950 W? =
11. 11.True or false: the ammeter measures voltage. (a) True (b) False
12. 12.📏 How many watts (W) is 0.1 kW?
13. 13.Which of these is measured in watts (W)? (a) voltage (b) power (c) the flow of charge (d) current
14. 14.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
15. 15.True or false: resistance is measured in ohms (Ω). (a) False (b) True
16. 16.True or false: the voltmeter is joined across a part. (a) False (b) True
17. 17.📏 How many ohms (Ω) is 1.6 kΩ?
18. 18.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
19. 19.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the pipe colour (c) the water tank lid (d) the tap handle
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 10 (d) 60
22. 22.📏 How many milliamperes (mA) is 1.28 A?
23. 23.True or false: resistance is measured in volts (V). (a) True (b) False
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) a narrow pipe (d) the water pressure
25. 25.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) voltage (d) energy used each second
26. 26.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
27. 27.📏 How many watts (W) is 4.8 kW?
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
29. 29.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) the push of a cell (d) how much a part resists
30. 30.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
31. 31.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
32. 32.True or false: the voltmeter measures current. (a) True (b) False
33. 33.📏 How many milliamperes (mA) is 0.79 A?
34. 34.True or false: current is measured in amperes (A). (a) False (b) True
35. 35.📏 How many kilo-ohms (kΩ) is 5000 Ω? =
36. 36.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
37. 37.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
38. 38.📏 How many kilowatts (kW) is 2800 W? =
39. 39.Which of these is measured in watts (W)? (a) the flow of charge (b) current (c) how much a part resists (d) energy used each second
40. 40.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell

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