Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 667 · 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 current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
2. 2.📏 How many kilo-ohms (kΩ) is 6700 Ω? =
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
4. 4.📏 How many kilo-ohms (kΩ) is 400 Ω? =
5. 5.True or false: resistance is measured in ohms (Ω). (a) True (b) False
6. 6.📏 How many milliamperes (mA) is 1.02 A?
7. 7.📏 How many ohms (Ω) is 3.7 kΩ?
8. 8.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1024 (d) 1000
9. 9.📏 How many ohms (Ω) is 1.7 kΩ?
10. 10.True or false: the voltmeter is joined in series. (a) True (b) False
11. 11.True or false: the voltmeter is joined across a part. (a) True (b) False
12. 12.True or false: the voltmeter measures voltage. (a) False (b) True
13. 13.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the pipe colour (d) the water pressure
14. 14.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) voltage (d) the flow of charge
15. 15.📏 How many ohms (Ω) is 2.6 kΩ?
16. 16.📏 How many amperes (A) is 2740 mA? =
17. 17.Which of these is measured in volts (V)? (a) resistance (b) power (c) the push of a cell (d) current
18. 18.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) power (d) resistance
19. 19.📏 Which unit measures power? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
20. 20.True or false: the ammeter measures voltage. (a) True (b) False
21. 21.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
22. 22.True or false: the ammeter is joined in series. (a) True (b) False
23. 23.📏 How many kilowatts (kW) is 2000 W? =
24. 24.True or false: voltage is measured in volts (V). (a) False (b) True
25. 25.Which of these is measured in amperes (A)? (a) power (b) voltage (c) energy used each second (d) the flow of charge
26. 26.Which of these is measured in amperes (A)? (a) energy used each second (b) the push of a cell (c) current (d) resistance
27. 27.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
28. 28.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: resistance is measured in watts (W). (a) True (b) False
30. 30.📏 How many watts (W) is 2.5 kW?
31. 31.📏 How many ohms (Ω) is 7.7 kΩ?
32. 32.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
33. 33.📏 How many ohms (Ω) is 7.5 kΩ?
34. 34.True or false: energy used each second is measured in watts (W). (a) True (b) False
35. 35.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) energy used each second (d) resistance
36. 36.📏 How many milliamperes (mA) is 1.28 A?
37. 37.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
38. 38.True or false: the ammeter measures current. (a) False (b) True
39. 39.📏 How many milliamperes (mA) is 0.94 A?
40. 40.📏 How many ohms (Ω) is 7.2 kΩ?

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