WBJEE · Physics · Semiconductors
When a semiconducting device is connected in series with a battery and a resistance, a current is found to flow in the circuit. If however, the polarity of the battery is reversed, practically no current flows in the circuit. The device may be
- A a \(p\) -type semiconductor
- B a \(n\) -type semiconductor
- C an intrinsic semiconductor
- D a \(p-n\) junction
Answer & Solution
Correct Answer
(D) a \(p-n\) junction
Step-by-step Solution
Detailed explanation
When the battery and resistance is connected with \(p n\) 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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