Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 194 · 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) current (b) voltage (c) how much a part resists (d) power
2. 2.📏 How many amperes (A) is 1030 mA? =
3. 3.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
4. 4.📏 How many ohms (Ω) is 6.3 kΩ?
5. 5.Which of these is measured in volts (V)? (a) the push of a cell (b) power (c) energy used each second (d) resistance
6. 6.📏 How many milliamperes (mA) is 0.25 A?
7. 7.True or false: the ammeter measures voltage. (a) True (b) False
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
9. 9.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
10. 10.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
11. 11.📏 How many watts (W) is 0.2 kW?
12. 12.📏 How many kilowatts (kW) is 3600 W? =
13. 13.📏 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
14. 14.Which of these is measured in watts (W)? (a) voltage (b) resistance (c) power (d) how much a part resists
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
17. 17.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure
18. 18.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
19. 19.True or false: the voltmeter is joined across a part. (a) True (b) False
20. 20.📏 How many ohms (Ω) is 4.2 kΩ?
21. 21.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) voltage (d) energy used each second
22. 22.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
23. 23.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
24. 24.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
25. 25.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
26. 26.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) voltage (d) resistance
27. 27.📏 How many milliamperes (mA) is 2.56 A?
28. 28.True or false: the voltmeter measures current. (a) False (b) True
29. 29.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
30. 30.📏 How many kilo-ohms (kΩ) is 8800 Ω? =
31. 31.True or false: voltage is measured in amperes (A). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 1.34 A?
33. 33.True or false: the push of a cell is measured in volts (V). (a) False (b) True
34. 34.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) voltage
35. 35.📏 How many watts (W) is 2.6 kW?
36. 36.True or false: energy used each second is measured in watts (W). (a) False (b) True
37. 37.True or false: current is measured in volts (V). (a) False (b) True
38. 38.📏 How many kilowatts (kW) is 100 W? =
39. 39.True or false: how much a part resists is measured in volts (V). (a) False (b) True
40. 40.True or false: the voltmeter is joined in series. (a) True (b) False

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