Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 436 · 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 1.4 kΩ?
2. 2.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 10 (d) 1024
3. 3.📏 How many watts (W) is 2.3 kW?
4. 4.True or false: the voltmeter measures current. (a) True (b) False
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) the push of a cell (d) how much a part resists
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) power (d) the flow of charge
8. 8.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.True or false: the ammeter is joined across a part. (a) False (b) True
11. 11.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
12. 12.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
13. 13.📏 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
14. 14.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
15. 15.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
16. 16.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.Which of these is measured in amperes (A)? (a) how much a part resists (b) resistance (c) the flow of charge (d) power
18. 18.📏 How many milliamperes (mA) is 1.52 A?
19. 19.📏 How many milliamperes (mA) is 2.95 A?
20. 20.Which of these is measured in watts (W)? (a) how much a part resists (b) voltage (c) energy used each second (d) current
21. 21.True or false: voltage is measured in volts (V). (a) False (b) True
22. 22.📏 How many watts (W) is 0.7 kW?
23. 23.📏 How many kilowatts (kW) is 2000 W? =
24. 24.📏 How many milliamperes (mA) is 0.73 A?
25. 25.True or false: energy used each second is measured in volts (V). (a) False (b) True
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 Which unit measures energy used each second? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
28. 28.📏 How many amperes (A) is 800 mA? =
29. 29.📏 How many kilowatts (kW) is 750 W? =
30. 30.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
31. 31.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
32. 32.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
33. 33.True or false: energy used each second is measured in ohms (Ω). (a) False (b) True
34. 34.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) the flow of charge (d) how much a part resists
35. 35.True or false: power is measured in amperes (A). (a) False (b) True
36. 36.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
37. 37.📏 How many amperes (A) is 730 mA? =
38. 38.Which of these is measured in volts (V)? (a) how much a part resists (b) resistance (c) voltage (d) the flow of charge
39. 39.📏 How many watts (W) is 1.5 kW?
40. 40.📏 How many milliamperes (mA) is 2.24 A?

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