Question

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Answer 1

Answer:

The correct option is (b) 5 Ω

Explanation:

The current through circuit

i=PV=100×10−30.5=0.2A

∴ Voltage drop across resistance =1.5−0.5=1V

R = $\frac{1}{0.2\\}$ = 5Ω

Answer 2

Answer:

The answer is 5 ohm.

Explanation:

Voltage in resistance will be 1 V because source is of 1.5 V and there is drop of 0.5 V in diode so remaining voltage is 1 V.

For detailed solution check out the attachment.