The equivalent series resistance is 2,500 Ω or 2.5 kΩ. To calculate this result:
Convert all values of resistance in ohm:
1.5 kΩ = 1,500 Ω;
0.7 kΩ = 700 Ω.
Sum the values:
Req = 1,500 + 700 + 300 = 2,500 Ω
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