BSEB Inter Physics case studies
BSEB Inter Physics · Put your knowledge to work in context.
The BSEB Intermediate Physics examination is the Class 12 physics paper set by the Bihar School Examination Board, the state board that certifies higher secondary students across Bihar. Candidates take it as part of the Intermediate (Science) stream, usually alongside Chemistry, Mathematics or Biology, and the mark feeds directly into board certification and into eligibility for undergraduate science and engineering admissions. The BSEB Inter Physics case studies are 5 cases and about 4,336 words.
1Dielectric Insertion: Who Supplies the Extra Energy?
In a school laboratory, a parallel-plate capacitor is made from two metal plates of area 0.020 m² held 2.0 mm apart by insulating supports. It is charged from a 100 V battery and the battery is then disconnected.
857 words, about 4 min2Potentiometer Readings When the Driver Cell Is Changed
A Class XII group uses a 10.0 m uniform potentiometer wire with a 2.0 V accumulator as the driver cell. The rheostat is adjusted until the potential gradient along the wire is 0.200 V/m.
848 words, about 4 min3Converting One Galvanometer into an Ammeter and a Voltmeter
A laboratory galvanometer has a resistance of 50 Ω and gives full-scale deflection at 1.0 mA. A student is asked to convert it into (i) a 0–1 A ammeter and (ii) a 0–10 V voltmeter, using the same movement.
854 words, about 4 min4Series Resonance: A Real 1390 V Across the Capacitor
A school laboratory has a series LCR circuit with R = 100 Ω, L = 2.0 H and C = 5.0 µF, connected to a variable-frequency 220 V (rms) supply. A student sets the frequency to 50 Hz, observes a current of about 2.2 A, and finds that the voltages across the inductor and across the capacitor are each about 1390 V - far above the 220 V source voltage.
838 words, about 4 min5Designing a Zener Regulator for a Fluctuating Supply
A student is building a 10 V regulated supply for a project. The raw DC input from a transformer, rectifier and filter varies between 18 V and 24 V as the mains fluctuates.
939 words, about 5 min