Electronic Devices and Circuits
In a semiconductor diode, the barrier offers opposition to

Free electrons in N-region only
Holes in P-region only
Majority as well as minority carriers in both regions
Majority carriers in both regions

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Electronic Devices and Circuits
The output, V-I characteristics of an Enhancement type MOSFET has

Only an ohmic region
An ohmic region at low voltage value followed by a saturation region at higher voltages
An ohmic region at large voltage values preceded by a saturation region at lower voltages
Only a saturation region

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