Conduction band electrons have more mobility than holes because they (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them

Conduction band electrons have more mobility than holes because they (1) are lighter (2) experience collision less frequently (3) have negative charge (4) need less energy to move them
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 experience collision less frequently
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(2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that of valence electron but the mobility is the same. Even for the same electric field, valence electrons cannot move as freely as the free electrons because its movement is restricted due to collisions. Therefore, the velocity of valence electrons is less compared to free electrons. In other words, the velocity of holes is less compared to free electrons. This means mobility is also less for a hole compared to free electron.

Description : (2) experience collision less frequently Explanation: When an electric field is applied, both the valence electrons and the free electrons move in the same direction. The hole direction is opposite to that ... to free electrons. This means mobility is also less for a hole compared to free electron.

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The majority charge carriers in p-type silicon are (A) Free electrons (B) Ions (C) Conduction electrons (D) Holes

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C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator where as Si is intrinsic semiconductor. This is because (1) The four bonding electrons in the case of C lie in the third orbit, whereas for Si they lie in the fourth orbit (2) In case of C the valance band is not completely filled at absolute zero temperature (3) In case of C the conduction band is partly filled even at absolute zero temperature (4) The four bonding electrons in the case of C lie in the second orbit, whereas in the case of Si they lie in the third

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Conduction in metals is due to a) Electrons only b) Electrons and holes c) Holes only d) Applied electric field

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For conductors, the free electrons will exist at a) Valence band b) Middle of valence and conduction band c) Will not exist d) Conduction band

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if you suspect atrial flutter : Consider digoxin if not already in use because it frequently increases the conduction ratio and decreases the ventricular rate. , Avoid adrenergic and atropinic agents during sedation or anesthesia for cardioversion. Ketamine is relatively contraindicatedthe cause of premature ventricular contraction? decrease O2 supply to the muscle decrease blood supply to the muscle the heart trying to beat fast ______________________________

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