MCQ
In the circuit shown, the current through the ideal diode is:
- A100mA
- B20mA
- C25mA
- D75mA
✓
Answer
(c) 25 mA
Explanation: The given diode is ideal and forward-biased so there is short circuit. No current flow through the $20 \Omega$ and whole current flow through the short circuit. The current flow through the circuit is, $I =\frac{2 V}{80 \Omega}=25 mA$
Explanation: The given diode is ideal and forward-biased so there is short circuit. No current flow through the $20 \Omega$ and whole current flow through the short circuit. The current flow through the circuit is, $I =\frac{2 V}{80 \Omega}=25 mA$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A charge $Q$ is uniformly distributed over the surface of nonconducting disc of radius $R$. The disc rotates about an axis perpendicular to its plane and passing through its centre with an angular velocity $\omega$. As a result of this rotation a magnetic field ofinduction $B$ is obtained at the centre of the disc. If we keep both the amount of charge placed on the disc and its angular velocity to be constant and vary the radius of the disc then the variation of the magnetic induction at the centre of the disc will be represented by the figure
→The output of an $OR$ gate is connected to both the inputs of a $NAND$ gate. The combination will serve as a
→In india electricity is supplied for domestic use at $220\,\,V$. It is supplied at $110\,\, V$ in $USA$. If resistance of $60\,\, W$ bulb for use in India is $R$, then the resistance of $60\,\, W$ bulb for use in $USA$ will be
→In the Wheatstone's bridge (shown in figure) X = Y and A > B. The direction of the current between ab will be
Samples of two radioactive nuclides A and B are taken. λA and λB are the disintegration constants of A and B respectively. In which of the following cases, the two samples can simultaneously have the same decay rate at any time?
The critical angle for total internal reflection of light going from medium $I$ to medium $II$ is given by the relation tan $i_C=\frac {5}{9}$ . The refractive index of the medium $I$ with respect to the medium $II$ is
→In nuclear reactions, we have the conservation of
If $2.2\,kW$ power is transmitted through a $100\,\Omega $ line at $22,000\,V,$ the power loss in the form of heat will be ............. $W$
→In an amplitude modulated wave for audio frequency of $500 \,cycle/second,$ the appropriate carrier frequency will be........$cycles/sec$
→Three equal capacitors, each with capacitance $C$ are connected as shown in figure. Then the equivalent capacitance between $A$ and $B$ is
→