Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 181 · 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 8.4 kΩ?
2. 2.True or false: voltage is measured in volts (V). (a) True (b) False
3. 3.📏 How many watts (W) is 0.8 kW?
4. 4.📏 How many kilo-ohms (kΩ) is 10000 Ω? =
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
6. 6.True or false: the flow of charge is measured in watts (W). (a) True (b) False
7. 7.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) current (d) the flow of charge
8. 8.📏 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
9. 9.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
10. 10.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
11. 11.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
12. 12.📏 How many amperes (A) is 2320 mA? =
13. 13.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
14. 14.True or false: the ammeter measures current. (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
16. 16.📏 How many amperes (A) is 2260 mA? =
17. 17.Which of these is measured in amperes (A)? (a) resistance (b) voltage (c) how much a part resists (d) the flow of charge
18. 18.Which of these is measured in ohms (Ω)? (a) voltage (b) power (c) the flow of charge (d) resistance
19. 19.True or false: the flow of charge is measured in volts (V). (a) False (b) True
20. 20.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
21. 21.True or false: power is measured in volts (V). (a) False (b) True
22. 22.📏 How many kilo-ohms (kΩ) is 800 Ω? =
23. 23.📏 How many ohms (Ω) is 8 kΩ?
24. 24.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) current (d) voltage
25. 25.📏 How many ohms (Ω) is 5.7 kΩ?
26. 26.True or false: power is measured in watts (W). (a) False (b) True
27. 27.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
28. 28.📏 How many kilowatts (kW) is 3750 W? =
29. 29.True or false: the ammeter is joined across a part. (a) False (b) True
30. 30.📏 How many kilo-ohms (kΩ) is 9900 Ω? =
31. 31.Which of these is measured in amperes (A)? (a) current (b) power (c) voltage (d) energy used each second
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the water pressure (d) the flow of water
33. 33.True or false: the ammeter measures voltage. (a) True (b) False
34. 34.📏 How many kilowatts (kW) is 2050 W? =
35. 35.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
36. 36.True or false: the voltmeter measures current. (a) False (b) True
37. 37.True or false: the voltmeter is joined in series. (a) False (b) True
38. 38.True or false: the voltmeter is joined across a part. (a) True (b) False
39. 39.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
40. 40.True or false: how much a part resists is measured in watts (W). (a) True (b) False

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