Semiconductor E...

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): The resistivity of a semiconductor decreases with temperature.

Reason (R): The atoms of a semiconductor vibrate with larger amplitude at higher temperature there by increasing it's resistivity.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Silicon is preferred over Germanium for making semiconductor devices.

Reason (R): The energy gap of Germanium is more than the energy gap of Silicon.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Zener diode is used as a voltage regulator.

Reason (R): Zener diode operated in reverse biased condition.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): When diode is used as a rectifier, its specified reverse breakdown voltage should not be exceeded.

Reason (R): When p-n junction diode crosses the reverse break down voltage, it get destroyed.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): The number of electrons in a p-type silicon semiconductor is less than the number of electrons in intrinsic silicon semiconductor at room temperature.

Reason (R): It is due to law of mass action.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): As the temperature of a semiconductor increases, its resistance decreases.

Reason (R): The energy gap between conduction band and valence band is small.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Semiconductors do not obey Ohm's law.

Reason (R): V-I characteristic of semiconductors is linear.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Ideal diode shows zero resistance in forward bias and infinite resistance in reverse bias.

Reason (R): Depletion region of a p-n junction diode extends in reverse bias and contracts in reverse bias.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): When a p-n junction diode is reverse biased, a feeble reverse current flows known as reverse saturation current.

Reason (R): In reverse bias condition, the minority carries can cross the junction.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): In a semiconductor, the conduction electrons have a higher mobility than holes.

Reason (R): The electrons experience fewer collisions.