st","extracted_subject":"PHYSICS","extracted_chapter":"SEMICONDUCTOR ELECTRONICS MATERIAL, DEVICE AND SIMPLE CIRCUITS","extracted_topic":"JUNCTION TRANSISTOR","questionPreviewUrl":"https://cdn.pureessence.tech/question-previews/packed_canvases/canvas_865.png?top_left_x=532&top_left_y=1488&width=532&height=243&app=solveeit"},"seo_metadata":{"keywords":[]},"doubt_solver_data":{"concept_summary":[]},"embeddings":[],"is_hidden":false,"_id":"66d23c9d70136192204c0ed4","slug":"an-n-p-n-transistor-circuit-has-a-0985-if-isubcsub","content":"An n – p – n transistor circuit has a = 0.985. If I_c = 2mA, then value of I_b is –","options":[{"_id":"68a41e467f15af4716ca7c01","text":"0.03 mA","sequence":0,"isCorrect":true},{"_id":"68a41e467f15af4716ca7c02","text":"0.003 mA","sequence":1,"isCorrect":false},{"_id":"68a41e467f15af4716ca7c03","text":"0.66 mA","sequence":2,"isCorrect":false},{"_id":"68a41e467f15af4716ca7c04","text":"0.015 mA","sequence":3,"isCorrect":false}],"correct_answer":"0.03 mA","explanation":"a = \\(\\frac{I_{c}}{I_{e}}\\) = \\(\\frac{I_{c}}{I_{c} + I_{b}}\\)= 0.985\n\nI_c = 0.985 (I_c + I_b)\n\nI_c = 0.985 I_c + 0.985 I_b\n\n0.985 I_b = 0.015 I_c = 0.015 × 2 mA\n\nI_b = \\(\\frac{0.015 \\times 2}{0.985}\\)= 0.03 mA\n\nI_b \\(\\approx\\)0.03 mA","question_type":"single_choice","appeared_in":[],"created_at":"2024-08-30T21:41:49.885Z","__v":0,"vector_store_id":"c7b1db9a-64b0-4493-86b1-130b4bc4fb3e","updated_at":"2024-08-30T21:41:49.885Z","isStarred":false},"params":{"questionSlug":"an-n-p-n-transistor-circuit-has-a-0985-if-isubcsub"}}]}]]

Question: An n – p – n transistor circuit has a = 0.985. If I<sub>c</sub> = 2mA, then value of I<sub>b</sub> i...

Solution