Diodes

Q.

the current through 20 ohm resistor.

1. 50 mA

2. 80 mA

3. 30 mA

4. 20 mA

Q. Transistors and diodes do not obey Ohm's law.

1. True
2. False

Q.

Select the heavily doped from the given options.

1. Zener Diode

2. Light Emitting Diode

3. Photodiode

4. Both A and B

Q.

What does bias mean?

Q. Calculate the current through the resistor. (Ignore diode resistance)

1. 2.5 A
2. 5 A
3. 0 A
4. 2 A

Q.

Diodes can be used for making :

1. LED lamps

2. Rectifiers

3. Amplifier

4. Capacitor

Q. A transistor has a base current of 1 mA and emitter current 90 mA. The collector current will be __.

1. 90 mA
2. 1 mA
3. 89 mA
4. 91 mA

Q. The current I through 10 $\Omega$ resistor in the circuit shown in figure.

1. 50 mA
2. 20 mA
3. 40 mA
4. 80 mA
5. 35 mA

Q.

An ammeter is always connected in series.

1. True
2. False

Q. Current flows through a diode in forward bias but current flow is negligible in reverse bias.

1. True
2. False

Q. Calculate the current through the resistor. (Ignore diode resistance).

1. 6A
2. 12A
3. 3A
4. 2A

Q.

Induced emf would be there in a circuit only for that much duration for which……..linked with the circuit is…….