Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 823 · 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.Which of these is measured in ohms (Ω)? (a) voltage (b) current (c) the push of a cell (d) how much a part resists
2. 2.📏 How many ohms (Ω) is 6 kΩ?
3. 3.Which of these is measured in amperes (A)? (a) the push of a cell (b) voltage (c) the flow of charge (d) how much a part resists
4. 4.True or false: the voltmeter is joined across a part. (a) False (b) True
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
6. 6.Which of these is measured in volts (V)? (a) the flow of charge (b) power (c) current (d) voltage
7. 7.True or false: energy used each second is measured in amperes (A). (a) True (b) False
8. 8.📏 How many amperes (A) is 70 mA? =
9. 9.📏 How many kilowatts (kW) is 4000 W? =
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.📏 How many ohms (Ω) is 1.4 kΩ?
12. 12.True or false: voltage is measured in volts (V). (a) False (b) True
13. 13.True or false: the push of a cell is measured in watts (W). (a) True (b) False
14. 14.True or false: current is measured in volts (V). (a) True (b) False
15. 15.True or false: current is measured in amperes (A). (a) False (b) True
16. 16.True or false: the ammeter is joined in series. (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 0.44 A?
18. 18.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
19. 19.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
20. 20.Which of these is measured in watts (W)? (a) the flow of charge (b) power (c) the push of a cell (d) current
21. 21.📏 How many milliamperes (mA) is 1.91 A?
22. 22.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) how much a part resists
23. 23.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) power (d) voltage
24. 24.📏 How many kilo-ohms (kΩ) is 900 Ω? =
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.📏 How many kilowatts (kW) is 1000 W? =
27. 27.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
29. 29.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
30. 30.📏 How many milliamperes (mA) is 2.86 A?
31. 31.True or false: the flow of charge is measured in watts (W). (a) False (b) True
32. 32.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
33. 33.True or false: the voltmeter measures voltage. (a) True (b) False
34. 34.📏 How many kilo-ohms (kΩ) is 4100 Ω? =
35. 35.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
36. 36.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
37. 37.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
38. 38.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
39. 39.True or false: current is measured in ohms (Ω). (a) False (b) True
40. 40.True or false: the voltmeter measures current. (a) True (b) False

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