Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 168 · 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.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
2. 2.Which of these is measured in volts (V)? (a) resistance (b) voltage (c) energy used each second (d) the flow of charge
3. 3.📏 How many amperes (A) is 620 mA? =
4. 4.📏 How many milliamperes (mA) is 2.62 A?
5. 5.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
6. 6.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) power
7. 7.True or false: the voltmeter measures voltage. (a) True (b) False
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.True or false: resistance is measured in volts (V). (a) True (b) False
10. 10.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) voltage
11. 11.True or false: power is measured in ohms (Ω). (a) True (b) False
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
13. 13.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
14. 14.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) power
15. 15.📏 How many ohms (Ω) is 7.9 kΩ?
16. 16.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
17. 17.📏 How many kilowatts (kW) is 2100 W? =
18. 18.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) the flow of water (d) a narrow pipe
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
20. 20.📏 How many milliamperes (mA) is 1.41 A?
21. 21.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
22. 22.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
23. 23.📏 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
24. 24.📏 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
25. 25.True or false: current is measured in amperes (A). (a) True (b) False
26. 26.True or false: the push of a cell is measured in volts (V). (a) False (b) True
27. 27.📏 How many watts (W) is 1.3 kW?
28. 28.True or false: the ammeter is joined across a part. (a) True (b) False
29. 29.Which of these is measured in volts (V)? (a) the flow of charge (b) resistance (c) energy used each second (d) the push of a cell
30. 30.True or false: the ammeter measures voltage. (a) False (b) True
31. 31.True or false: current is measured in ohms (Ω). (a) True (b) False
32. 32.📏 How many milliamperes (mA) is 0.54 A?
33. 33.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
34. 34.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
35. 35.True or false: resistance is measured in ohms (Ω). (a) True (b) False
36. 36.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the flow of charge (c) current (d) power
37. 37.📏 How many kilo-ohms (kΩ) is 100 Ω? =
38. 38.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.📏 How many watts (W) is 1.6 kW?

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids