The circuit shown in the figure contains two diodes each with a forward resistance of 50 Ω and with infinite backward resistance. If the battery voltage is 6 V, the current through the 100 Ω resistance (in ampere) is:
Correct answer: B. 0.02
- A. Zero
- B. 0.02
- C. 0.03
- D. 0.036
Explanation
The total resistance in the circuit is the sum of the diode resistances and the 100 Ω resistance, giving a total of 300 Ω.Using Ohm's law (V = IR), we find the current (I) by dividing the voltage (6 V) by the total resistance (300 Ω), resulting in a current of 0.02 A. The other options are incorrect because they either assume no current flow or miscalculate the total resistance or voltage drop. The correct answer is B, 0.02.D1 → F.B (Forward Bias), D2 R.B (Reverse Bias)I = Vnet/Rnet = 6/300 = 0.02A.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electronics
A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
Practise Electronics
660 free Electronics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electronics questions
The diagram above shows a PN junction diode connected as depicted. What will be the behavior of the diode?
The diode used in the circuit shown in the figure has a constant voltage drop of 0.5 V at all currents and a maximum power rating of 100 milliwatts. What should be the value of the resistor R, connected in series with the diode, for obtaining maximum current?
In the circuit given below, v(t) is the sinusoidal voltage source, the voltage drop VAB(t) across the resistance R is, and diodes D1 and D2 are identical:
In Fig., the input is across the terminals "A" and "C," and the output is across "B" and "D." Then the output is:
In Fig., the current through the resistor is practically:
A full wave rectifier along with the output is shown in Fig. The contribution (s) from the diode 1 are: