Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 198 · 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 unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
2. 2.Which of these is measured in ohms (Ω)? (a) energy used each second (b) power (c) how much a part resists (d) current
3. 3.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) current (d) the flow of charge
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
5. 5.True or false: the voltmeter measures current. (a) False (b) True
6. 6.Which of these is measured in watts (W)? (a) power (b) voltage (c) the push of a cell (d) current
7. 7.True or false: energy used each second is measured in watts (W). (a) False (b) True
8. 8.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
11. 11.Which of these is measured in amperes (A)? (a) resistance (b) current (c) power (d) voltage
12. 12.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
13. 13.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) the water pressure (c) a bigger tank (d) a narrow pipe
15. 15.True or false: power is measured in watts (W). (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
17. 17.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the water pressure (d) the tap handle
21. 21.True or false: resistance is measured in volts (V). (a) False (b) True
22. 22.True or false: the voltmeter measures voltage. (a) False (b) True
23. 23.📏 How many kilo-ohms (kΩ) is 9000 Ω? =
24. 24.True or false: current is measured in amperes (A). (a) False (b) True
25. 25.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
26. 26.True or false: the ammeter is joined across a part. (a) False (b) True
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 10 (d) 1000
28. 28.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
29. 29.Which of these is measured in ohms (Ω)? (a) power (b) current (c) voltage (d) resistance
30. 30.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
31. 31.📏 How many amperes (A) is 2970 mA? =
32. 32.📏 How many milliamperes (mA) is 0.27 A?
33. 33.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
34. 34.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.📏 How many amperes (A) is 3000 mA? =
37. 37.📏 How many amperes (A) is 400 mA? =
38. 38.True or false: resistance is measured in amperes (A). (a) False (b) True
39. 39.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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