Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 226 · 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.True or false: voltage is measured in watts (W). (a) True (b) False
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
3. 3.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
4. 4.📏 How many kilo-ohms (kΩ) is 9500 Ω? =
5. 5.Which of these is measured in amperes (A)? (a) resistance (b) the push of a cell (c) current (d) voltage
6. 6.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) resistance
7. 7.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
8. 8.True or false: the voltmeter measures voltage. (a) True (b) False
9. 9.📏 How many amperes (A) is 1460 mA? =
10. 10.📏 How many watts (W) is 3.8 kW?
11. 11.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 How many amperes (A) is 1400 mA? =
14. 14.📏 How many milliamperes (mA) is 1.96 A?
15. 15.📏 How many kilowatts (kW) is 4750 W? =
16. 16.📏 How many ohms (Ω) is 8.4 kΩ?
17. 17.True or false: the push of a cell is measured in volts (V). (a) False (b) True
18. 18.Which of these is measured in amperes (A)? (a) resistance (b) power (c) energy used each second (d) the flow of charge
19. 19.True or false: the ammeter is joined in series. (a) False (b) True
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.📏 How many kilowatts (kW) is 800 W? =
24. 24.True or false: the ammeter measures current. (a) False (b) True
25. 25.📏 How many milliamperes (mA) is 2.53 A?
26. 26.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) resistance (d) current
27. 27.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) voltage (d) how much a part resists
28. 28.True or false: current is measured in amperes (A). (a) True (b) False
29. 29.📏 How many kilo-ohms (kΩ) is 8500 Ω? =
30. 30.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
31. 31.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
32. 32.True or false: current is measured in volts (V). (a) True (b) False
33. 33.📏 How many kilowatts (kW) is 1650 W? =
34. 34.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
35. 35.📏 How many watts (W) is 4.5 kW?
36. 36.📏 How many watts (W) is 4.2 kW?
37. 37.📏 How many amperes (A) is 2450 mA? =
38. 38.📏 How many milliamperes (mA) is 1.62 A?
39. 39.📏 How many watts (W) is 0.6 kW?
40. 40.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)

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