Question:
A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. The device may be
A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. The device may be
Updated On: Jul 18, 2024
- a $p-$type semiconductor
- an intrinsic semiconductor
- a $p-n$ junction
- an $n$ type semiconductor
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The Correct Option is C
Solution and Explanation
When the battery and resistance is connected with $pn$ diode,
In case of forward bias that $p$ is connected to $+ $ve terminal of battery, current flows.
If one reverse the polarity i.e., $p$-end is made negative, no current flows in semiconductor diode.
In case of forward bias that $p$ is connected to $+ $ve terminal of battery, current flows.
If one reverse the polarity i.e., $p$-end is made negative, no current flows in semiconductor diode.
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Concepts Used:
Semiconductors
Semiconductors are a crystalline solid materials, whose electrical conductivity lies between a conductor and an insulator. Semiconductors are mainly used in the manufacturing of electronic devices like capacitors, transistors, diodes, Integrated circuits, etc.
Properties of Semiconductor:
- Semiconductor acts like an insulator at Zero Kelvin. On increasing the temperature, it works as a conductor.
- Due to their exceptional electrical properties, semiconductors can be modified by doping to make semiconductor devices suitable for energy conversion, switches, and amplifiers.
- Lesser power losses.
Uses of Semiconductor:
- Semiconductors are widely used in manufacturing electronics devices like transistors, diodes, sensors, integrated circuits.
- Semiconductors are widely used in all electronic devices, like mobile phones, digital cameras, communication devices, trains, ATMs, etc.