BPSC – Combined Competitive Examination · প্রশ্ন 129
During a short circuit, the value of electric current in the circuit:
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (C) Increases very sharply
ব্যাখ্যা
In a short circuit, live and neutral touch, resistance falls almost to zero and current rises sharply.
- (A) ভুল
Wrong: resistance drops, so current rises.
- (B) ভুল
Wrong: current changes sharply.
- (C) সঠিক
Correct: near-zero resistance makes current (I = V/R) very large.
- (D) ভুল
Wrong: the defining feature is a sudden large rise.