Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 641 · 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 amperes (A)? (a) resistance (b) power (c) the push of a cell (d) the flow of charge
2. 2.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
3. 3.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
4. 4.True or false: the ammeter measures voltage. (a) False (b) True
5. 5.📏 Which unit measures voltage? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1000 (d) 1024
7. 7.📏 How many kilowatts (kW) is 4400 W? =
8. 8.True or false: energy used each second is measured in watts (W). (a) False (b) True
9. 9.📏 How many watts (W) is 1.1 kW?
10. 10.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
11. 11.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) voltage (d) how much a part resists
12. 12.📏 How many watts (W) is 4.3 kW?
13. 13.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
14. 14.Which of these is measured in volts (V)? (a) the push of a cell (b) resistance (c) how much a part resists (d) the flow of charge
15. 15.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
16. 16.📏 How many watts (W) is 3 kW?
17. 17.📏 How many amperes (A) is 1810 mA? =
18. 18.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) current (d) voltage
19. 19.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) voltage (d) the flow of charge
20. 20.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
21. 21.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
22. 22.True or false: energy used each second is measured in amperes (A). (a) False (b) True
23. 23.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
25. 25.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
26. 26.True or false: voltage is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
28. 28.📏 How many kilowatts (kW) is 3500 W? =
29. 29.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
30. 30.True or false: power is measured in amperes (A). (a) True (b) False
31. 31.📏 How many watts (W) is 3.6 kW?
32. 32.📏 How many kilo-ohms (kΩ) is 2700 Ω? =
33. 33.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
34. 34.📏 How many watts (W) is 3.7 kW?
35. 35.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.18 A?
37. 37.True or false: resistance is measured in ohms (Ω). (a) True (b) False
38. 38.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) energy used each second (d) resistance
39. 39.True or false: voltage is measured in volts (V). (a) False (b) True
40. 40.True or false: the voltmeter is joined in series. (a) False (b) True

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