Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 91 · 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) resistance (b) voltage (c) current (d) the push of a cell
2. 2.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.📏 How many milliamperes (mA) is 2.19 A?
4. 4.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
5. 5.True or false: resistance is measured in amperes (A). (a) False (b) True
6. 6.True or false: the ammeter measures current. (a) False (b) True
7. 7.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
8. 8.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the flow of charge (d) power
9. 9.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
10. 10.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) power (d) voltage
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
13. 13.📏 How many amperes (A) is 1350 mA? =
14. 14.True or false: voltage is measured in amperes (A). (a) False (b) True
15. 15.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.📏 How many milliamperes (mA) is 2.6 A?
18. 18.📏 How many amperes (A) is 210 mA? =
19. 19.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
20. 20.True or false: current is measured in amperes (A). (a) False (b) True
21. 21.True or false: the ammeter measures voltage. (a) False (b) True
22. 22.Which of these is measured in amperes (A)? (a) current (b) voltage (c) resistance (d) power
23. 23.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
24. 24.📏 How many kilowatts (kW) is 500 W? =
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
28. 28.True or false: power is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the voltmeter measures current. (a) False (b) True
30. 30.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
31. 31.Which of these is measured in watts (W)? (a) the flow of charge (b) resistance (c) energy used each second (d) current
32. 32.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
33. 33.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
34. 34.Which of these is measured in watts (W)? (a) how much a part resists (b) resistance (c) the push of a cell (d) power
35. 35.📏 How many ohms (Ω) is 4.6 kΩ?
36. 36.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
37. 37.True or false: the voltmeter is joined in series. (a) False (b) True
38. 38.True or false: voltage is measured in volts (V). (a) False (b) True
39. 39.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
40. 40.📏 How many kilo-ohms (kΩ) is 1500 Ω? =

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